I'm terrible with my workout regime and following it strictly. I'm terrible with a healthy diet and following it strictly. I'm terrible on the weekends about getting up at reasonable hours and all of those things. But, when it comes to my work and the discipline it takes to get to work on time - I hate unprofessionalism.

Breakthrough 2005–present

In 2005 Heigl was cast in what would become her most high-profile role to date as medical intern Dr. They've got a lot of story lines going on there.

: /ˈhaɪɡəl/; born November 24 1978) is an American actress and producer. Heigl started her career as a child model with Wilhelmina Models before Katherine Heigl turned her attention to acting. 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.