Katherine Heigl born November 24, 1978 is an American actress and producer. She is possibly best known for her role as Dr. Izzie Stevens on ABC's Grey's Anatomy from 2005 to 2010, for which she won a Primetime Emmy Award for Outstanding Supporting Actress – Drama Series in 2007. She has also starred in films such as Knocked Up, Zyzzyx Road, 27 Dresses, The Ugly Truth, Killers, Life As We Know It, New Year's Eve, and One for the Money.
Heigl started her career as a child model with Wilhelmina Models before she turned her attention to acting. She made her debut in the coming-of-age film That Night. Heigl co-starred as Isabel Evans in the television series Roswell and movies including My Father the Hero before landing her break-out role in Grey's Anatomy. Heigl has established herself as a cover model appearing on numerous publications including Maxim, Vanity Fair and Cosmopolitan.
Heigl is married to singer Josh Kelley, with whom she has a daughter.