Who Wore It Best? Lily Cole vs. Blair Waldorf | Gossip Girl Show 

In Episode 3.18, "The Unblairable Lightness of Being," Blair competes for fashion supremacy in the same bow-bedecked Fall 2009 Marchesa dress that British model Lily Cole wore to the L.A. premiere of The Imaginarium of Doctor Parnassus.
Keywords: gossip girl, blair waldorf