Fun fearless female of the year Katherine Heigl: gorgeous Grey's Anatomy star Katherine Heigl is one of the most uncensored actresses we've ever interviewed. Want proof? Keep reading as she dishes on love, sex, her booming career, and more.(COSMO NEWS)(Interview)

* Katherine Heigl arrives for lunch at L.A.'s Chateau Marmont hotel bubbling with excitement. "I just worked out," she says, as if it were a major accomplishment. Which, evidently, it is--she's blown off sessions with her trainer the past four days in a row. "I don't have a lot of discipline," the 29-year-old actress admits. "If I wasn't in this industry, I wouldn't work out. But I have hips and a butt and everything that goes 'along with that, including cellulite! So I do the best I can."

A confession like that isn't what you'd expect to hear from one of Hollywood's hottest actresses, but it's precisely the kind of no-holds-barred statement Katherine (or Katie, as friends call her) is prone to make ... and one of the many reasons she's Cosmo's Fun Fearless Female of the Year. "People who know me well know that I have an opinion about pretty much everything," she says.

Being outspoken seems to become Katherine, who's on a roll both professionally and personally. There's her recent Emmy win for her portrayal of sensitive doc Izzie Stevens on Grey's Anatomy and the hilarious and daring performance she, urn, delivered in last summer's blockbuster flick Knocked Up. Then there's the striking makeunder Katherine pulled off for her latest film, January's charming romantic comedy 27 Dresses: She cut off several inches of her glamorous blond hair and dyed it mousy brown to play plain Jane, a woman who's always the bridesmaid, never the bride.

Not that Katherine would know what that's like: As Cosmo went to press, she was about to walk down the aisle with rocker Josh Kelley.

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Everything in Katherine's life appears to be lining up perfectly. She has not only achieved the success she's dreamed about since she started acing at age 9, but she's done it on her own terms. "I pride myself on being kind," she says. "But that's not to say there aren't moments when I'm a diva. Everybody has bad moments." Still, she says, "there are people in my life who keep me grounded, so I couldn't behave that badly, even if I wanted to."

But she's not "afraid to call other people out on their bad behavior. Last year, after costar Isaiah Washington allegedly used an offensive word (faggot) to refer to T.R. Knight, who plays George on Grey's, Katherine spoke up against Isaiah at the Golden Globes. Her fierce defense of T.R. made headlines. "You can't give me too much credit for being brave," she says now. "I was just a girl who had had a couple of drinks and was angry and got mouthy" Though she doesn't regret voicing her opinion, she concedes that it was risky. "I really did think it would luck me," she says. "As I was opening my mouth, I kept thinking, Shut up. But it's an issue that I felt really passionately about."