You might still be reeling from the pictures of Chuck and Blair's wedding on Gossip Girl, but the craziness doesn't end there: Serena and Dan may also be tying the knot in the series finale! These additional photos from the set show Serena in a huge gold dress (perhaps a throwback to her cotillion dress?) alongside Dan in dapper duds. Even Jenny is making a triumphant return to the Upper East Side for the occasion, but is it for real? These two aren't exactly on great terms right now, so perhaps this could be a dream sequence or a flashforward. Either way, these pictures are worth a second (and third) look, so check 'em out.