After weeks of speculation, Katherine Heigl has finally confirmed she's leaving Grey's Anatomy.
"I'm done," she tells the new issue of Entertainment Weekly (on stands Friday).
"We just finalized our agreement," continues Heigl, 31, who played Dr. Izzie Stevens on the ABC medical drama for six seasons. "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."
She says she wants more time to focus on her 16-month-old daughter Naleigh, whom she adopted from South Korea with husband Josh Kelley last September.
Check out pics of Katherine and other new Hollywood moms!
"I started a family and it changed everything for me," says Heigl, who took a three-month leave after welcoming her baby girl. "It changed my desire to work full-time."
A source told Us Weekly earlier this month that Heigl also wants to focus on her film career. Her newest romantic comedy, Killers, which costars Ashton Kutcher, hits theaters June 4.
"She loves movies," the source said.
She also took a five-episode leave from Grey's to film Life As We Know It last year.