Margot Robbie looks like a modern Princess Diana in a blue polka-dot dress

She's doing the Windsor girlie thing.
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Gareth Cattermole

Promoting her new movie Amsterdam on The Tonight Show Starring Jimmy Fallon, Margot Robbie wore a cerulean (insert Devil Wears Prada scene here) polka-dot dress with a white collar by Alessandra Rich that's a throwback in the most royal way.

Image may contain Footwear Clothing Shoe Apparel Human Person Margot Robbie Evening Dress Fashion Gown and Robe
Raymond Hall

The puff around the shoulders, the micro-dots, the gold buttons, the fake pockets, the white lapel…the white lapel! The low-cut cleavage-baring neckline is very 2022, but with a few small adjustments and a slightly rounder shoe you get:

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Princess Diana in 1989Anwar Hussein/Getty Images

And sure, Robbie is sitting down with Fallon to talk about a movie, and Diana was sitting down with Anwar Hussein to talk about, presumably, a different movie, but still! And I know, I know, people make Diana comparisons at the drop of a fascinator (that's royal for hat), but blue with polka dots is, like, a thing with the women who marry into the Windsor line. Here's Di in the maternity version of this ’fit:

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Princess Diana in 1982.Anwar Hussein/Getty Images

And Kate Middleton has rocked similar patterns…many times! The gal loves polka dots. Here are just two examples, both by Alessandra Rich, who made Robbie's dress:

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Kate Middleton in 2019Max Mumby/Indigo/Getty Images
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Kate Middleton in 2022.Karwai Tang

Not sure what this says about Australian Robbie, but if she's considering a bike shorts and sweatshirt era next, she should go for it.

Mere months after Amsterdam comes out, Babylon, also starring Margot Robbie, will hit theaters, so expect to see more fashionable looks as the actor and her stylist brave back-to-back press tours. Fallon, thankfully, also asks her about the movie we actually all care about: Barbie (actual title TBA). She also brought the Aussie birthday treat “fairy bread” to birthday boy Fallon and led the audience in a round of “Happy Birthday.” If you'd like to make the delicacy at home, it's white bread with butter and sprinkles.

This dish was invented by a five-year-old and you will never convince me otherwise! She also professed her love of red Solo cups. So maybe she's not so royal after all.

This article was originally published on Glamour.com.