Why Barbie Trades Chanel For Birkenstock, According to the Movie's Costume Designer

Robbie and Gosling had many ideas for their characters' looks, with Gosling specifically dreaming up the "Ken"-branded underwear that harks back to Calvin Klein's recognizable logo. Robbie's outfits, while befitting of Stereotypical Barbie, do evolve with her Barbie's story arc as she grows and learns about her individuality.