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See the stylish, sexy and outrageous costumes as the stars hit the set
Updated: Friday Oct 01, 2010 | 05:00 PM EDT
By: Christie LaRusso
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A mask can't hide this belle of the ball, as the Gossip Girl's favorite socialite lights up the TV show's N.Y.C. set in layers of blue chiffon and sequins from Carolina Herrera.
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