Leighton Meester and Ed Westwick were in familiar outfits for another morning on the NYC set of Gossip Girl today — shop Leighton's look here. Before getting into her costume, Blake Lively looked like she was having a ball as she laughed all the way to her trailer. We got a hint as to what's in store for a few of the characters from Michelle Trachtenberg earlier this week, but we'll have to wait for the premiere episode on Sept. 15 to get the full scoop.

To see more from the set just