Hilary Duff was back on the set of Gossip Girl in NYC yesterday, joining Penn Badgley for coffee before they met up for scenes with Chace Crawford and Blake Lively. Jessica Szohr had the night off from filming, but she fueled rumors of trouble between her and Ed by dining with Adam Brody and a few other friends instead of her boyfriend. This morning, Chace and Taylor Momsen, were up for another morning of work on next season's plotlines, which might include a Gossip Girl/90210 crossover episode if AnnaLynne McCord gets her way.

To see lots more photos including Taylor Momsen, Blake with Penny, and Chace with Penn and Hilary, just