Katherine Heigl ( HY-gəl; born November 24, 1978) is an American actress and model. She portrayed Dr. Izzie Stevens on the ABC television medical drama Grey's Anatomy from 2005 to 2010, a role that brought her recognition and accolades, including the Primetime Emmy Award for Outstanding Supporting Actress in a Drama Series in 2007.
Heigl started her career as a child model with Wilhelmina Models before turning her attention to acting, making her film debut in That Night (1992) and later appearing in My Father the Hero (1994), Under Siege 2: Dark Territory (1995), Wish Upon a Star (1996) and Bride of Chucky (1998). She then landed the role of Isabel Evans on The WB television series Roswell (1999–2002), for which she received nominations for the Saturn Awards and Teen Choice Awards.
She then starred in commercially successful romantic comedy films such as Knocked Up (2007), 27 Dresses (2008), The Ugly Truth (2009), Killers (2010), Life As We Know It (2010) and New Year's Eve (2011). She also appeared in Zyzzyx Road (2006), One for the Money (2012), The Big Wedding (2013), and Unforgettable (2017).