Rachel Bilson at Christian Dior Spring '11

First things first: how lovely does Rachel Bilson look sitting pretty in pink at Christian Dior's Spring '11 show at Paris Fashion Week? She's been on a major roll lately with her fancy frocks — did you see her in that leopard Roberto Cavalli? Damn! But Rachel's not the only lady whose style we're crushing on. Blake Lively leaves her minis behind for a more ladylike silhouette, Claudia Schiffer works plaid on plaid, and Vanessa Hudgens ditches boho for ultra-sexy. Ready for a celebrity fashion adventure? Step inside.