Katherine Heigl switched her career to acting.
Katherine Heigl . She started her career as a child model with Wilhelmina Models before turning her attention to acting . From 1999 to 2002 , Heigl co-starred as Isabel Evans on the television series Roswell . Heigl played Izzie Stevens on the ABC medical drama Grey 's Anatomy from 2005 to 2010 , a role for which she won the Primetime Emmy Award for Outstanding Supporting Actress in a Drama Series in 2007 . She played the lead role on the short-lived NBC television series State of Affairs from 2014 to 2015 .