Gossip Girl stars Ed Westwick, Chace Crawford and Leighton Meester all looked preppy - and, at times, goofy - on the set of their hit series at The New York Palace Hotel in New York City on Thursday. Click to enlarge any of the pictures below ...

TONGUE IN CHEEK: Leighton, Ed and Chace certainly look like they're enjoying themselves on the Gossip Girl set this week. [Photo Credits: Splash News Online]

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