Leighton Meester was born on 9th April 1986 in Marco Island, Florida.She Claire Meester is an American actress, best known for her role in the book-based TV show Gossip Girl.
She is best known as Savannah in the former NBC drama Surface. Other roles include guest starring as "Debbie Pendleton" on Season 4 of the FOX drama 24, as "Ali" in episode 3 and 4 of Season 3 of the FOX drama House, as "Carrie Bishop" on Season 1 of the UPN drama Veronica Mars.
She made her film debut in the feature Hangman's Curse, based on the best-selling novel by Frank Peretti. She also recently starred in the independent film Flourish with future House co-stars Jennifer Morrison and Jesse Spencer, and in the drama Inside.
She is co-starring as Blair Waldorf in The CW's Gossip Girl, from Josh Schwartz, creator of The O.C. and based on the book series about the lives of New York's two privileged Upper East Side girls.