Katherine Heigl (Isobel 'Izzie' Stevens)

Katherine Marie Heigl (born November 24, 1978) is an American actress. She is best known for her role as Dr. Izzie Stevens on Grey's Anatomy and her starring role in the movies Knocked Up, 27 Dresses, and The Ugly Truth. She recently stared in Killers as the lead role with Ashton Kutcher.

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. Over the years, Heigl has established herself as a cover model appearing on numerous publications including Maxim, Vanity Fair and Cosmopolitan. Heigl married Josh Kelley in Park City, Utah, on December 23, 2007.

Heigl was born in Washington, D.C., the daughter of Nancy, a personnel manager, and Paul Heigl, a financial executive and accountant. Heigl has German and Irish ancestry, and was raised in The Church of Jesus Christ of Latter-day Saints. She is the youngest of four children (her siblings are Meg, Jason, and Holt). Heigl lived in Virginia and then Denver before her family settled in Connecticut, where they moved into a large, old Victorian-style farmhouse in the wealthy town of New Canaan, where she spent most of her childhood.

In 1986, her older brother Jason died of injuries suffered in a car accident, after being thrown from the back of a pickup truck while out for lunch with some of his high school classmates. Following his death, the family decided to donate his organs. Afterward, their parents converted to The Church of Jesus Christ of Latter-day Saints (prior to that her mother was Lutheran and her father Catholic). Heigl is now a strong proponent of organ donation. Although she is no longer a "strong practicing Mormon," she stated that she hopes to "...find my way back as I get older and a little less selfish."