PHOTOS: Penn Badgley & Blake Lively Celebrate a Halloween Birthday

By:OK! Staff

Nov. 2 2009, Published 1:00 p.m. ET

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Penn Badgley and Blake Lively celebrate Halloween at the Svedka Vodka Adult Playground 2033 Event Series at 1OAK in NYC on Oct. 31. At the stroke of midnight, Gossip Girl star Penn blow out the candles of his 23rd birthday cake with an image of Svedka's "fembot."

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