The most dramatic celebrity hair colour swaps

Looking for a complete hair colour change can make a huge (and dramatic) impact on the way you look and feel.
Whether you're a redhead who wants to try her hand at being bleach blonde, or a brunette looking for alternative brown hair colours, we see you, and we hear you.
If you want to take the leap, we've put together some pictures of celebrities who've gone for the colour change for your inspiration.
REXYou may know Em Rata for her signature brown locks but the model-turned-actress is very partial to changing up her style, from a fringe to dramatic wigs...
@emrata / Instagram...the American star nailed the redhead look as she tested out different styles on her Instagram.
Getty ImagesSalma Hayek traded her glossy brunette locks for a new 'do - and we were quite curious to see how it looked...
Rex FeaturesSalma went full blonde for Paris Fashion Week, and we almost didn't recognise her. Now this might be a wig, because she was back to brunette by the end of the day. Either way, she rocked it - Elle Woods would be proud.
Getty ImagesEmma Roberts is a total colour chameleon when it comes to her hair. She's most notably been blonde and a redhead before...
Getty ImagesAnd now she has gone brunette! She could get away with anything.
Getty ImagesGIRLS star Allison Williams has sported glossy brunette locks throughout her time on the show...
Getty Images... but since the show ended, she has experimented more with her hair. We think this new blonde look works so well with her skin-tone. Let's face it - Allison could get away with anything!
Rex FeaturesThe ever-gorgeous Olivia Wilde is usually recognised by her glossy brown locks...
Rex Features... but she recently went for it with an extreme hair colour and style swap! Olivia has ditched the brunette look in favour for an icy blonde hue with dark roots, and has chosen to sport a bob.
Rex FeaturesThe gorgeously great Brie Larson has recently rocked a brunette dye with hints of red...
Rex FeaturesBut now she's BLONDE! It's a bold colour swap for the star, but one we think she totally rocks.
Getty ImagesModel Coco Rocha has always stunned as a sultry brunette, but recently she decided to find out if blondes really do have more fun...
Getty ImagesThis blunt bleach blonde bob is definitely a dramatic change. We think Coco looks gorgeous!
Rex FeaturesAnother star who has swapped his brown locks for blonde is Orlando Bloom...
Rex FeaturesJust check out his lighter 'do. What do you think?
Rex FeaturesDemi Lovato's gorgeous dark bob was certainly one of the singer's iconic looks, but Demi just shared a photo of a new daring look...
Rex FeaturesDemi has gone blonde, although it is not the first time that the singer dyed her hair, it was quite a surprise to her fans that loved the new golden long locks.
Rex FeaturesKylie Jenner went bold when she dyed her hair peroxide during fashion month and although we liked it, it's her new hair colour we're really loving...
kyliejenner/Instagram...Nice, don't you think? The rose gold should definitely stay.
Xtina/InstagramChristina Aguilera has been a brunette or redhead for a while now...
Xtina/Instagram... and yet she recently revealed this bleach blonde look, which gave us all the early noughties nostalgic feels.
Rex FeaturesGame Of Thrones star Sophie Turner has always been a gorgeous redhead...
Rex Features... but recently she shocked us all by going blonde! We can't wait to see more pictures of her new look, but we reckon she looks ultra cool.
Rex FeaturesWe've always loved Kate Mara's short locks, whether she styles them into a super short pixie cut or a bob...
Rex Features... and she recently mixed things up by dying her locks blonde. Obsessed? Us? Maybe...
Getty ImagesWe love Daisy Ridley and her luscious brunette locks...
Getty Images...but it turns out she looks just as stunning as a redhead.
Getty ImagesSophie Turner is famous for her fiery red hair in Game of Thrones...
sophiet/Instagram...but she's only gone and dyed her hair blonde, which seems more Daenerys than Sansa.

Michelle Keegan is simply stunning, and we've always recognised her as brunette...

... but she's recently taken the plunge and gone bright blonde! This is definitely a major change for her, but why has she decided to swap shades now? It seems the style might just be for a role, as she was spotted on set with her new locks on the set of Tina And Bobby.
Getty ImagesGame Of Thrones star Maisie Williams looks super cute and cool with her brunette choppy bob...
PA Photos.. but she recently showed off her new look at the Serpentine Summer Party. We love this daring new glossy navy shade.
Rex FeaturesActress Lily Collins has always rocked a dark brunette hairstyle, which she often likes to style into vintage waves...
Rex Features... but now she's taken a walk on the wild side and dyed her locks a vibrant shade of red-pink. We think this shade looks incredibly eye catching and stunning on her!
Getty ImagesPretty Little Liars star Shay Mitchell has rather enviable locks. Her glossy brunette hair is long, shiny and gorgeous...
Getty Images... and she's now taken the plunge and gone blonde! We think she looks utterly gorgeous.
Getty ImagesWe've always known Lana Del Rey as a redhead since she rose to fame.
Getty ImagesShe has just shown off a new look though, in the form of this blonde dye. We can't wait to see how she styles it on the red carpet.
Rex FeaturesLady Gaga's hair is ever-changing, but we're most used to seeing her with her signature blonde locks (in many different styles...)
Rex FeaturesYet lately, she mixed things up with this brunette dye - we wonder if it's a wig or something a little more permanent!
Rex FeaturesWe love a bit of Nick Grimshaw, and are so used to his signature spiky locks in a darker hue...
Getty Images... WOW - just look at how different his hair looks here! The Radio host debuted a very bright new look via his social media, much to the surprise of his many fans and followers. He's since shown it off on the red carpet.
Rex FeaturesHere's Cate Blanchett looking chic at the 2016 Oscars with her bright blonde short hair...
Rex Features... wow - this is a change! The actress is rocking a rose gold pastel look now, and we love it. It's eye-catching and fun.
Rex FeaturesKaia Gerber is a natural brunette and her hair is silky, shiny and downright gorgeous. But she fancied being blonde for the day...
Kaia Gerber/InstagramDon't worry, 14-year-old Kaia didn't hit the bottle - she donned a blonde wig. You've got to admit though - she looks incredible as blonde AND brunette. Model skills.
Getty ImagesThe lovely Bella Heathcote looks gorgeous as a blonde...
Getty Images... but we also love her as a brunette! She recently debuted this darker look, and paired her locks with bold red lipstick.
Getty ImagesRecently, Shailene Woodley has been rocking a bright blonde hair hue...
Getty Images... but she changed it up for the NYC premiere of Allegiant with this dark brunette shade. We envy the gloss and shine of her locks!
Rex FeaturesRebel Wilson has been a blonde for as long as we can remember. But recently she debuted a new, very bold look...
Rex FeaturesWow - Rebel's gone orange! This rose gold shade is attention-grabbing and vibrant.
GettyWe've always known Kendall Jenner as a brunette, and never really seen her with different coloured hair...
Getty Images... but recently, at the AW16 Balmain show, Kendall donned a blonde wig for her runway appearance. We think she can get away with both!
RexWe've known Ashley Olsen as a blonde pretty much her entire life - but recently she debuted a rather different change...
Rex... and turned brunette! What do you think? We have to admit although we love her blonde locks, this light chocolate brown shade suits her perfectly.
GettyOrange Is The New Black star Ruby Rose has one of our favourite pixie cuts, and we are very used to seeing it in this brunette shade...
Ruby Rose / InstagramOn her Instagram page, however, Ruby showed off a very vibrant green hue lately. It sure is bold!
GettyPretty Little Liars star Lucy Hale has been as brunette for as long as we can remember...
Lucy Hale / InstagramBut she's recently decided to trial the phrase 'blondes have more fun'! She debuted this gorgeous blonde choppy bob on her Instagram.
Getty ImagesSinger Meghan Trainor is known for her signature long blonde locks...
Getty Images... but at the 2016 pre-GRAMMYs party, she debuted a very different look. Her light brunette curls suit her really well, we think.
Getty ImagesEver since her stint as a blonde in 2015, we've been waiting to see if Kim Kardashian would ever go back to a lighter shade...
Getty Images... and she hasn't disappointed us! The star donned a blonde 'do (albeit a wig) for Kanye's 2016 fashion show.
Rex FeaturesAnne Hathaway is known for her signature glossy brown mane...
Anne Hathaway/Instagram... but recently the pregnant star debuted a blonde shade, much to her Instagram followers' shock! We can't wait to see more pictures.
Getty ImagesWe;re used to seeing French actress and model Clemence Posey with her gorgeous blonde locks...
Getty ImagesBut recently, the star decided to try out a brand new hue, opting for this pale brown colour, which has a slight red tinge.
Rex FeaturesOlivia Palermo is a natural blonde, but she dabbled with being a brunette for a long time. Now though, she's a blonde...
Rex FeaturesYep! Sashaying around Couture Fashion Week the style maven hit the cobbles with new blonde hair.
Getty ImagesLily James has dyed her hair a number of shades for various roles but naturally she’s a rich chocolatey brunette. But not anymore...
Getty ImagesThe actress added a dark blonde tint but managed to keep her hair’s glossy shine. We’re impressed!
Getty ImagesWe're used to seeing Ellie with her blonde short bob, so the orange tresses were a bit of a surprise!
Getty ImagesWoah, Ellie Goulding debuted a bold new 'do at the EMAs. The star opted for bright orange locks, which she paired with a plunging black dress.
Getty ImagesAgyness had previously been rocking a darker 'do with hints of red, but she decided she wanted to amp up the blonde...
Rex FeaturesThe model and entrepreneur debuted a lighter hair colour at a screening in London. Her shimmering blonde locks looked great in a pretty tousled style.
RexShe recently debuted this gorgeous autumn-ready hair colour at her sister's event for Debenhams. It wasn't long, however, until she switched things up...
Rex FeaturesAt the Burberry SS16 show in London, Sienna debuted a gorgeous honey strawberry blonde colour. Suits her, doesn't it?
Rex FeaturesKaty Perry is known for her thick dark locks, and yet she changes up her look a LOT...
Getty Images... and this time she's gone red! The star's fiery locks were debuted on the red carpet. We think this look suits her well, and looks great with her green ensemble.
Getty ImagesMad Men's Elisabeth Moss has rocked both blonde and brunette locks but she's gone for something a little different this time...
Getty Images...Yep, we can't get enough of her warm auburn colour. It really makes her features pop and is perfect for the coming Autumn.
Getty ImagesMena Suvari's famed as the blonde stunner in American Beauty but has gone for a complete 360 with her latest colour...
Getty Images...She's swapped it for a beautiful, rich brown and we love it.
GettyThis is the Kylie Jenner we know right?! Well...
AKM-GSI...get used to something a little different. Kylie revealed her new 'do on her 18th birthday and it's certainly different.
Getty ImagesAmy Poehler is a renowned blonde, so imagine our surprise when she arrived at Cannes Film Festival 2015 with an altogether new look...
Getty ImagesThe comedienne showcased her auburn tresses and pulled it off with aplomb.
GettySheridan Smith has never been afraid to experiment with her style, but we're most used to seeing her with a cute blonde crop like this one...
Getty...So imagine our surprise when the Brit beauty stepped out on the BAFTA red carpet with a cute brunette pixie crop! We love it, Sheridan.
Getty ImagesKhloe Kardashian is a natural brunette, but she ever so slightly dabbled with blonde hair when she tried out ombre...
Getty ImagesNow, well she's full on blonde! Khloe opted against the white peroxide hair (a la Kim Kardashian at the Balmain show), and instead she went for a Californian sun-kissed look. We love it.
GettyThis is how we know Hilary Duff. She's not a star that changes her hair every week (thank you, Rihanna) so you can imagine our surprise when she debuted her new look...
RexDidn't expect that, did you? Somehow, we like it!
Rex FeaturesKim as we know her. Tanned, tousled, brunette...
Splash NewsNot anymore. Kim K knows how to cause a stir. Revealing this bold new look on the Balmain front row during Paris Fashion Week, the jury's out.
PARIP in piece Jared Leto's perfect 'hombre'...
Getty ImagesUnveiled during Paris Fashion Week, the 43-year-old actor debuted his peroxide 'do. Admittedly this new look is all for his role as the Joker in the Suicide Squad movie so it may not be a permanent fixture.
Rex FeaturesShailene's gorgeous pixie crop has become the actress' signature 'do but it's with delicate honey highlights that we know her best.
Rex FeaturesArriving at the Miu Miu show at Paris Fasgion Week in early October 2014 though and Shailene debuted this swept back style with a newly platinum blonde hue.
Rex FeaturesSince bursting on to the catwalk Suki Waterhouse's hair has been a blend of blonde beach babe meets red carpet goddess. Aside from the tousled aesthetic and the cute little side plaits, it's the choppy in-your-eyes fringe that has spawned a thousand copycats.
Rex FeaturesSo just imagine our surprise when the gorgeous model stepped out with this beautiful dark and moody brunette hue - looking like Lily Collins' sister in the process!
PA PhotosFor the London premiere of Maleficent in May 2014, Elle Fanning added an ethereal touch to her gorgeous platinum blonde locks in the form of a mini crown of colour co-ordinated flowers.
Rex FeaturesFast-forward to September though and Elle has ditched the long length and opted for this gorgeous mid-length brunette 'do instead.
Rex FeaturesGLAMOUR went into a frenzy when Jourdan Dunn highlighted her gorgeous Lob with these honey hues but...
Jourdan Dunn/InstagramThe top model has got right on trend with this season's love of Greys and Metallics with a new look. Debuting her hair on Instagram, she captioned the photo "Coachella Ready thank you @rendaattia". So ready.
PA PhotosDianna Agron's short, dip-dyed honey-hued bob has practically become her signature 'do of late.
WennBut on a recent shopping trip out in LA, the former Glee star debuted this hot new platinum blonde 'do. We like!
PA PhotosWe've got used to seeing Kate Mara with a beachy blonde shoulder-skimming bob.
Getty ImagesBut ahead of Autumn, the House of Cards actress has dyed her hair a gorgeous chestnut shade and gone a little shorter.
PA PhotosJames Franco's matinee idol good looks are famously topped off with a head of gorgeous brunette locks.
Getty ImagesSo imagine our surprise when the Hollywood star was snapped with this blonde crop on the set of his new flick Michael.
Rex FeaturesOlivia Palermo's impossibly thick and naturally lustrous hair has made her one of our longtime hair icons and don't get us started on that rich and glossy chestnut hue...
Getty ImagesBut since she tied the knot, Olivia Palermo has opted for a summery update to her signature hair with this gorgeous honey-hued colour. We particularly love the choppy face-framing highlights around the front, too.
Rex FeaturesSince giving birth to her daughter North in June 2013, Kim Kardashian has played around with her hair colour, even experimenting with a richly blonde dip-dye. However, for the last few months, Kim's made a return to her natural raven hue.
Rex FeaturesBut hold up! Just hours after that previous snap was taken, Kim revealed a completely new totally honey blonde 'do. But before you think the reality TV star has hit the bottle again, Kim revealed on Instagram that it was just a wig. Considerate us, fooled!
Rex FeaturesWhether working deep raven locks or honey highlights, Kristen Stewart never looks more glamorous than when she's wearing her long locks side-swept and wavy.
Rex FeaturesHaving gone red for a film role, Kristen proves her beauty versatility by totally rocking a rich copper hair hue on the Cannes red carpet in 2014. We love this look.
PA PhotosWe'd just got used to The Wolf Of Wall Street star Margot Robbie's chocolatey brown locks when...
PA Photos... She reached for the bottle once again, this time dyeing her hair a rich shade of red. With her warm skin tone and piercing light blue eyes, we'd say this might be our favourite shade on the star to date.
Rex FeaturesLily's dark chocolate, glossy locks are her signature style.
Rex FeaturesBut the gorgeous singer recently debuted a brand new style thanks to this strawberry red dip-dye.
PA PhotosEver since Sophia Bush emerged as feisty Brooke Davis on the TV show One Tree Hill, we've always thought of her as a brunette. Until now...
Getty Images...Yep, Sophia Bush has hit the (peroxide) bottle. The 31-year-old actress was seen on Extra with a dramatic new hair colour. Like it?
Rex FeaturesKate Bosworth is known for a having two different coloured eyes, AND great natural blonde hair. The actress is currently shooting a new film in New York, and on set she revealed a new red hairstyle. Are you ready to see it?
Rex FeaturesRED HAIR! Kate Bosworth was filming scenes for her new film, Still Alice and she's said goodbye to the blonde, and hello to auburn locks. She teamed her new look with natural make-up and peach lips.
PA PhotosMargot Robbie shot to fame in 2013 thanks to her acting ability in The Wolf Of Wall Street, not to mention her stunning beauty and gorgeous blonde locks. Why mess with tress perfection, right?
PA PhotosWrong! Margot decided to change up her signature blonde ringlets for the biggest night in Hollywood - the Oscars. The Australian beauty worked a vampy red carpet look consisting of a beaded Saint Laurent black gown, dark crimson lips and a new dark brunette hairstyle. Risqué, yes, but a total winner in our eyes.
PA PhotosJulia Roberts' copper red locks have been her trademark since she first burst on to the scene all those years ago and whilst she’s changed up her look a few times, it’s her flaming red hair that’s her beauty trademark.
INFphotoSay what?! Just ahead of the 2014 Oscars, nominee Julia Roberts was snapped sporting not those gorgeous long, russet locks but a completely new platinum blonde ‘do. Proving that she’s a hair chameleon, we have to admit, Julia’s owning this new look!
PA PhotosElizabeth Olsen has switched up her Olsen-esque honey blonde locks for a decidedly different hue...
NBCU Photo Bank via Getty ImagesThe 25-year-old stopped by Andy Cohen's Watch What Happens Live, and sported an uber glossy brunette hair colour. We love it!
PacificCoastNews.comAfter giving birth to baby Nori in the summer of 2013, Kim Kardashian emerged a couple of months later with a bold, new blonde 'do and a shoulder-length style.
Rex FeaturesFast-forward six months though and Kim's back to her brunette best with this gorgeously subtle, rich new chestnut colour and sharp, choppy layers. Beaut!
PA PhotosSheridan Smith has switched up her signature blonde locks for a decidedly different hue...
Rex FeaturesThe 32-year-old actress debuted her new russet locks on the National Television Awards red carpet. We love this rich, vibrant shade on Sheridan.
PA PhotosKatherine Jenkins has switched her platinum blonde locks for a darker hue after signing a new record deal...
Getty Images...And we think she looks just lovely. The singer announced that she'd signed for classical label Decca Records, and switched her hair to signify the change.
PA PhotosWhether short or long, we've always been able to rely on Johnny Depp's gorgeous face being framed by brunette locks. Until now...
PA PhotosBecause JD's gone blonde! The actor showed off his new look at the London Film Festival.
PA PhotosYasmin Le Bon’s been modelling her chocolate brown locks for decades so imagine our surprise when she….
Getty Images…Stepped out with bleached platinum blonde locks. What an image transformation – although she still looks awesome.
Rex FeaturesWe're used to seeing Ashley Greene flitting between dark brunette and warmer auburn hues...
Rex Features...But this blonde colour is totally new! The American beauty has been gradually lightening her hair for a while and is now working this platinum hue.
Rex FeaturesCarey Mulligan has been lighting up red carpets with her chic blonde crop for some time now...
PA Photos...But no more! The formerly-blonde beauty has stepped out with this lovely warm brunette hue in New York. We love it, do you?
Rex FeaturesBrunette beauty Rose Byrne is known for her glossy chestnut bob.
PA Photos...Or she was until she debuted this blonde wavy 'do at the 2013 Emmys.
PA PhotosAnd Rose wasn't the only one to choose the Emmys as the occasion to debut a new hairstyle... Flame-haired Christina Hendricks also ditched her signature hair hue.
PA Photos...In favour of this more muted auburn shade. Do you like it?
PA PhotosLeigh Lezark is known for her striking dark locks and glowing pale complexion. Or was...
Rex Features...Until she ditched the dark hair hue and went back to her natural sunny blond hair hue. Leigh is gorgeous enough to work both hair hues, and it's nice to see her with this golden shoulder-length crop for a change. Or it was, until...
Rex Features...She swapped back to this chic raven side-swept bob. We can't keep up!
Rex FeaturesSelma Blair's ditched her signature dark brunette locks and gone...
Rex Features...Blonde! She definitely pulls off the new hair hue, but which colour do you prefer Selma's locks?
PA PhotosPetite brunette beauty Anna Kendrick looks gorgeous with her glossy locks pulled into a chic low bun.
Rex Features…With this sunny strawberry-blonde hair hue Anna looks just as good. We have a major style crush on this American beauty.
Rex FeaturesJennifer Lawrence: caramel-haired beauty, Best Actress Oscar winner, and all-round GLAMOUR girl crush...
AKM-GSI / Splash News...But just moments after winning her Oscar she's back hard at work as Katniss Everdeen, switching the sunny highlights for deep-chocolate locks.
Rex FeaturesTeen dream Chloe Moretz looks gorgeous with honey-brown waves.
Getty Images...So it's no surprise that she looks lovely with super-chic glossy chocolate locks, too. Miss Moretz has got to be the most sophisticated 16-year-old around.
Rex FeaturesOh James Franco, how do we love you? Let us count the ways. One: your cool brunette crop.
WennBut wait! What's this? Franco's gone ginger. Whether for a role, or he just felt like a strawberry-blond switch-up, Franco-ly, we think he looks hot.
PAThe Britney we know and love, cute blond locks and smoky eyes. But could she improve her look?
Rex Features...Yes! Britney – we can't congratulate you enough on this magnificent colour swap. Heading towards a more natural colour gives you sophistication and class. Excellent work.
Rex FeaturesActress Zosia Mamet is a shy brunette in the hit TV show GIRLS...
Rex Features...But has recently swapped natural brown for knockout blond. We're loving the different blond hues with the long length - an excellent example of how a dramatic colour change can really work.
PA PhotosBonnie Wright the way we fell in love with her as Ginny Weasley: long copper locks, radiant skin and minimal make-up…
Rex Features…But Bonnie’s kissing her Harry Potter days goodbye once and for all with this dramatic colour swap to a super-glossy raven long bob. Wow!
Rex FeaturesColour swap alert! We’re used to seeing Emily Blunt as a bold brunette (and more recently with warm auburn locks) but Emily looks just as gorgeous (if not more…) with this sunny golden hair hue. We love her undone up-do, too.
Rex FeaturesAnd the before shot... Emily looks stunning with her multi-tonal brunette locks swept back into a wavy up-do.
PA PhotosNatalie Portman looks stunning as a warm-toned brunette...
PA Photos...So imagine our surprise when the actress stepped out in LA with this golden-blond style! Talk about a transformation.
PA PhotosAlthough she started out her acting life as a bubbly blonde on The OC, it wasn't until Olivia Wilde turned brunette that we really stood up and took notice of her.
Rex FeaturesIn April 2012, Olivia ditched her signature chocolate hair hue and swapped to this rich, golden blonde. She could work any hair colour, couldn't she?
Rex FeaturesWe’ve become accustomed to seeing Tulisa Contostavlos as pop’s daredevil brunette...
Getty Images... So, we were rather surprised when the star did a sudden hair 180 on us when she entered court in July 2012. Talk about an image overhaul!
PA PhotosThe gorgeous Emma Stone just can't make up her mind. In the space of 12 months, she went from platinum blonde...
PA Photos...To rich auburn red (which makes her clear green eyes really shine)...
Rex Features...And back to blonde again. Lucky for Emma, with her colouring she can pull off any look.
PA PhotosKaty Perry’s almost as famous for her quirky style as she is for her pop-tastic tracks. This deep raven hair hue was long her signature look.
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Rex FeaturesKaty played colour swap and tried life as a blonde when she stepped out with this rich, warm golden colour. But it didn’t last long...
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PA Photos...Katy then opted for an on-trend cotton candy pink hair hue, and looking fabulous. One thing we’ve learned: if you’ve got a face as gorgeous as Katy’s, you can rock any colour...
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PA Photos...Even long blue and purple streaks. We love it!
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Rex FeaturesTwilight star and GLAMOUR.com girl crush Kristen Stewart caused quite a stir when she stepped out with this honey and golden streaked mane. The dark beach-blonde hue really suited the American beauty.
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DAVE M. BENETT/GETTY IMAGESThen, Kristen ditched the auburn waves in favour of this luscious long straight raven style. And she's looking more gorgeous every day, don't you think?
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PA PhotosFirst, we fell in love with Jessie J's kick-ass voice. Then, we fell in love with her amazing style. This sharp-cut raven bob quickly became her signature.
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PA PhotosBut then Jessie decided to mix things up with this popping purple colour. She had kick-started the rainbow hair colour trend...
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Bigpicturesphoto.com...And once the trend had gone global, Jessie made her mark with this statement bright red dip-dye. Fierce!
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PA PhotosCheryl Cole's body-beautiful brunette locks have long been her crowning glory…
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Matrix Photos/www.matrixphotos.com/Next up, the Girls Aloud starlet decided to inject some oomph, sporting this delicious cherry-red shade. Cue a thousand copycats.
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PA PhotosBut Cheryl had obviously heard that blondes have more fun, stepping out with this shoulder-length golden-blonde style. What's your favourite colour on the Brit beauty?
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American rock chick Ashlee Simpson looks fabulous with this glossy, deep red colour, with just a hint of aubergine.
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Rex FeaturesAshlee's our favourite colour, colour, colour, colour, colour chameleon. She looks equally fabulous with this bright blonde pixie crop.
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America’s favourite pop princess Britney Spears looks at her best with a head of glossy, girly blond locks. We love this look.
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Even though she’s worked red, pink and brown in the past, Brit will always be a blonde in our eyes. But that's not to say she didn't rock this deep chocolate colour, too.
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Surf-fanatic Cameron Diaz was born to be a blonde – and looks her best with slightly grown-up, unkempt colour through the ends.
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Cam’s another celeb who can’t get enough of the colourist’s brush, and switches from blonde to brunette with ease. Here she works a glossy coffee brown for 2007’s Golden Globes ceremony.
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The original Material Girl might have dabbled in the dark side on occasion, but Madonna will always be one of the world’s most infamous blondes.
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Madge goes all 40s on us, with an almost ash brown hue, styled into a waved bob.
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OC lovely Mischa Barton had the tresses every teen girl wanted while she played Marissa Cooper on the hit show – wavy, textured and in a sun-kissed shade of golden blonde.
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When she left the OC, Mischa moved onto more ‘serious’ acting - so ditched her California-girl colour for this altogether more sombre shade of reddy brown.
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We adore Nicola Roberts' natural tangerine hue. She might have been teased about it when Girls Aloud formed, but now women the world over are paying their colourists for the exact same colour. Who's laughing now?
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Rex FeaturesNicola swapped au naturel for a rich burnt-orange and a new curly bob which perfectly harmonised with her flawless, porcelain complexion. She can pull off any look!
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PA PhotosFirst lady of the rom com, Reese Witherspoon, is another LA native who’s famous for their natural-looking golden blonde tresses.
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When Reese went brunette for a film role she showed that if you’re pretty enough, you can pull off anything. Jealous? Us? Never.
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Christina Ricci lets her inner Wednesday Addams shine through in her gothically inspired black, befringed and shoulder-length ‘do.
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Ricci keeps the fringe but lightens up with softer, glossy brown with some golden blonde streaks to match her hazel eyes.
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100 fabulous hairstyles to try at home
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Working a modern version of the Marilyn, Scarlett Johansson looks every bit the Hollywood bombshell with her platinum-infused curls.
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Rex FeaturesLooking just as gorgeous as a fiery redhead, this look sparked a wave of copycat colourings.
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As if a little thing like hair colour was going to ruin Scarlett’s charm – playing deepest, chocolatey brown to perfection, ScarJo keeps the look firmly A-list with a highly glossy finish.
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100 fabulous hairstyles to try at home
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Clueless star Alicia Silverstone worked the dizzy blonde look to perfection with her layered highlights.
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But being a brunette really worked out for her – looking fab and ultra-sophisticated, Alicia is all grown up in this rich coffee brown colour.
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Despite trying her hand at WAG-style bleached highlights, Victoria Beckham has mostly stayed true to her naturally gorgeous brunette self since the Spice days.
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First came the Pob, then came the bleach, as Victoria made a statement with her blunt new cut and striking platinum hue, which became one of the most copied styles of the noughties.
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It was her punky look and bleached crop that shot this model to fame – and now Aggy’s shaggy locks have become her trademark.
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Proving she’s worth her weight in model gold, Ms Deyn shows off her versatility in this deep brown hue at the Viktor & Rolf show at autumn/winter 2008’s Paris Fashion Week.
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Beyoncé’s never been one to get stuck in a style rut – remember all those costume changes at the Grammys?! – and here she mixes up her naturally dark hair with some golden highlights.
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The B we all know and love goes for her fave colour combination; a chocolatey brown with darker low-lights running through the ends.
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Yet another hair colour chameleon, LiLo rocks a chestnut brown to complement her glowing A-list tan.
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PA PhotosLiLo also looks ultra-glam with this platinum-blonde hue...
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...But this is how we love Lindsay – strutting out as a fiery red head with soft strawberry highlights, and bringing a whole new desirability to the term ‘ginger’.
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GLAMOUR favourite Lily Allen looks all grown up in her Chanel dress and Audrey-esque up-do. The black shade she’s plumped for looks fab with her old school Hollywood red lips and eyeliner flicks, too.
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Lil’s hair and make-up philosophy is all about having fun – this candy coloured shock of fuchsia pink hair made her a tabloid darling.
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Rex FeaturesKnown for her light brunette bob that sparked a million copycats when she went for the chop in 2012, Karlie's gorgeous hair is almost as famous as she is!
PA PhotosBut Miss. Kloss is another fashionista to have taken her naturally ash blonde hair hue a shade or two lighter for the summer months and was snapped working this hot new ‘do at Paris Couture Week in 2014.