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Katherine Marie Heigl is an American actress and producer who is the wife of Josh Kelley. She is best known for her roles as Isabel Evans on the WB/UPN sci-fi teen drama series Roswell from 1999 to 2002, and Dr. Isobel "Izzie" Stevens on the ABC medical drama series Grey's Anatomy from 2005 to 2010. She also voiced Andie in The Nut Job and its 2017 sequel.

For Disney, she portrayed Nicole in the 1994 Touchstone Pictures film My Father the Hero and Alexia "Alex" or "Ally" Wheaton, the older sister of Hayley (as well as Hayley while she is in Alexia's body) in the 1996 Disney Channel Original Movie Wish Upon a Star. She also played Romy in the ABC Family TV movie Romy and Michele: In the Beginning.

Disney Roles