Leighton Marissa Meester (born April 9, 1986) is an American actress, singer, songwriter, and model. She is best known for her starring role as the devious socialite Blair Waldorf on teen drama television series Gossip Girl on The CW (2007–2012).

Meester was born in Fort Worth, Texas, to Constance Lynn (née Haas) and Douglas Jay Meester. Her father is a real estate broker; her mother is a writer. She has two brothers; an older brother, Douglas Logan Meester (born 1983), and a younger brother, Alexander "Lex" Meester (born 1994).

At the time of her birth, Meester's parents were serving time in a federal prison for their involvement in a drug ring that smuggled marijuana from Jamaica to the United States.

Constance was able to give birth to Leighton in a hospital and nurse her for three months in a halfway house, before returning to prison to complete her sentence. Her paternal grandparents cared for Meester during this period. She has maintained that her parents gave her a normal upbringing and, despite their criminal past, has stated, "It made me realize that you can't judge anyone—especially your parents—for what they've done in their past, because people change."

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