Gossip Girl Season 4, Episode 1: "Belles de Jour" Blair Waldorf (Leighton Meester) traipsed through Paris in a Moschino dress, Christian Louboutin shoes and a Chanel cuff and bag, while her BFF Serena van der Woodsen (Blake Lively) beamed in a Georges Chakra dress, a Rag & Bone blazer, a Yestdat hat, a Mulberry bag, a Janis Savit bracelet and a Made Her Think bracelet.