Rachel Bilson arrived on set in Paris yesterday wearing black leggings and a leather jacket. Hours later she emerged out of hair and makeup looking angelic in a white robe and jeweled tiara. Rachel's in France shooting a commercial for Magnum ice cream directed by Chanel mastermind Karl Lagerfeld. Rachel's been racking up her frequent flier miles traveling back and forth between LA and Europe, where she last met up with her BFF and Baby costar Kate Bosworth at Burberry's runway presentation during London Fashion Week. She'll be exploring a whole new area soon when she gets to work on her new show, Heart of Dixie, on location in North Carolina.