Chace Crawford and Penn Badgley Filming Gossip Girl Pictures

Chace Crawford and Penn Badgley arrived on the NYC set of Gossip Girl yesterday in t-shirts and jeans before changing into character. The guys were joined by original cast member Michelle Trachtenberg, who arrived on set wearing a low-cut, embellished gown.

The show returns for its sixth and final season on Oct. 8, and in the Gossip Girl sneak peek trailer, it appears there's a wedding on the horizon for one of our favorite Upper East Siders. Leighton Meister's and Ed Westwick's characters, Blair Waldorf and Chuck Bass, seem to be making another go of it, but we'll have to see if Serena Van Der Woodsen (Blake Lively) can put the pieces together and finally uncover the mystery behind Gossip Girl.