Episode Overview
In a fashionable farewell to remember, our favorite Upper East Siders join forces for one last soiree, and the shocking identity of Gossip Girl is finally revealed.
Guest Stars
Taylor Momsen
Jenny Humphrey
Jessica Szohr
Vanessa Abrams
Willa Holland
Agnes Andrews
Sofia Black-D'Elia
Sage Spence
Alex Bento
Henry Bass
Michael Bloomberg
Michael Bloomberg
Lisa Loeb
Lisa Loeb
Rachel Bilson
Rachel Bilson
Katie Cassidy
Juliet Sharp
Wallace Shawn
Cyrus Rose
William Baldwin
William van der Woodsen