Leighton Marissa Meester (born April 9, 1986) is an American actress and singer. Meester gained fame for playing the role of Blair Waldorf in the CW young-adult television series Gossip Girl. She most recently appeared in the 2010 country drama film Country Strong, and in the 2011 thriller The Roommate. As of 2011, she is set to appear in another two big screen movies: Monte Carlo, and The Oranges.
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