Leighton Marissa Meester (born April 9, 1986) is an American actress and singer. Meester first garnered attention for playing Blair Waldorf in the CW television series Gossip Girl. She most recently appeared in the 2010 country drama film Country Strong, the 2011 thriller The Roommate, and the 2011 romantic-comedy Monte Carlo.
In 2007, Meester was cast in the CW's teen drama series Gossip Girl as Blair Waldorf. The show is based on the book series by Cecily von Ziegesar about the lives of New York's privileged Upper East Side young adults. Her performance is the most critically acclaimed of the show, with Blair being cited as the series' breakout character, and also garnering much media recognition due to her wardrobe.
Meester appeared on the television film The Haunting of Sorority Row, and played a part in the ensemble comedy/drama Remember the Daze. She also appeared in the horror/thriller film Killer Movie in 2008.
Meester had small roles in the 2010 comedies Date Night and Going The Distance. She starred in Screen Gems' 2010 country drama Country Strong and the 2011 thriller The Roommate. In 2011 she starred alongside Selena Gomez and Katie Cassidy in the young femme comedy Monte Carlo, loosely based on Jules Bass's young-adult book Headhunters. She is set to star in The Uncatchable Cowgirl Bandits of Nottingham, Texas alongside Amber Heard; in the indie dramatic comedy The Oranges opposite Hugh Laurie; and she also joined the cast of the comedy I Hate You, Dad, alongside Adam Sandler, Andy Samberg, and Milo Ventimiglia.
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Leighton Meester on the set of "Gossip Girl" in NYC, august 9