Sienna Miller's hairstyle at The Met Ball

Sienna Miller wowed at last night's Met Ball. Not just because her and Jude Law went public, or because of her dramatic midnight blue Pucci gown - but also, her hair! Strongly inspired by the sex kitten-esque beauty of Brigitte Bardot, her body-beautiful half-up/half-down 'do was to-die-for. Like her look? We've got the step-by-step guide on how to get it here from Sienna's stylist.