Fashion's Night Out: Stars Hit the Stores!

From the Olsens bartending to Posh signing T-shirts, see all the stars who turned out to support shopping in N.Y.C.

TAYLOR MOMSEN

Who says pants are a wardrobe staple? The Gossip Girl star eschews bottoms while performing with her band Pretty Reckless in the West Village as part of the Teen Vogue bloc party.