Hillary Duff - Leighton Meester - Gossip Girl - Taylor Momsen
Credit: Jose Perez/Splash News; McKenzie/Retna; CMB/Splash News

Spotted: The entire Gossip Girl cast clad in ensembles better fit for a 1920s saloon than present day Manhattan (think Chuck Bass in head-to-toe pinstripes). We love Taylor Momsen's gangster-style jumpsuit and Hillary Duff's jeweled headband, but it's Leighton Meester in black pearl necklaces and a netted cloche that gets our style vote.

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