The cast of Gossip Girl  was joined by special guest star Tyra Banks  yesterday while filming scenes in NYC. Leighton Meester  cuddled up to her real-life boyfriend Sebastian Stan between takes, looking happy despite recently having to nix the sex tape rumors . Newbie Hilary Duff  wore a familiar dress  as she worked with Penn Badgley , while Blake Lively  brought her puppy Penny along again. Ed Westwick  was also on hand looking dapper as always, while speculation continues  about his off-camera relationship with Jessica Szohr .
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