You can probably guess that I love a masquerade ball, not that I've been to many in my life. So I was transfixed last night when all the Gossip Girl  youngins got dressed to the nines and mysteriously wandered around the ball. But the wandering led to drama-inducing mistaken identities and foul play — and a funny game of strip hide and seek. As always, lots of drama and fashion to go around. Were you paying attention? Take our quiz and let's find out!
Photos courtesy of The CW