"I am done," declares Heigl. "We just finalized our agreement. Everyone had been working really hard to find an amicable and gracious way of letting go and moving on. It's sad but it's what I wanted." The 31-year-old actress reveals that it was family issues, not her burgeoning film career, that prompted her to approach series creator Shonda Rhimes and ask to be let out of her contract 18 months early.