Look back at her Met Gala gowns from 'Gossip Girl' to now! Spotted: E! News celebrating LeightonMeester's birthday April 9 by looking back on Gossip Girl's relationships from worst to best.
LeightonMeester is best known for her starring role as Blair Waldorf on the CW series, "GossipGirl." Since that role, she has also appeared in a number of other films and television series ...