Heigl began modelling at age nine, and she was in a Cheerios commercial. Her film debut was in That Night (1992) at age 13, and she was cast in her first leading film role in the 1994 film My Father the Hero. Through the nineties, Heigl appeared and starred in various films and made-for-TV movies.
In 1999, Heigl was cast as Isabel Evans in Roswell. She had auditioned for all three of the show's female leads.
- Heigl previously dated her Roswell co-star Jason Behr during filming, and rumors spread that they were engaged, but their relationship ended around 2004.
- on the Internet Movie Database
- Katherine Heigl on Wikipedia
- on Instagram
- Official website: katherineheigl.info
- Entertainment Weekly: Stars Who Dated Their On-Screen Relatives (slide 16) by Shirley Li. September 30, 2015.
- Mental Floss: 16 Out-of-this-World Facts About Roswell by Roger Cormier. May 14, 2017.
- PopSugar.com: 10 Celebrity Couples Who Fell in Love After Playing Onscreen Siblings. June 18, 2016. / Is There a TV Costar Curse? 33 Couples That Couldn't Make It Work. February 8, 2017.