From Suite101:

Grey's Anatomy Star Katherine Heigl on the Set of Judd Apatow's Summer 2007 Comedy Knocked Up

The lovely Katherine Heigl takes a break from playing a pregnant one night stand to talk about her new comedy. Knocked Up is currently filming for a summer 2007 release.

A few blocks south of the set of her new movie, Knocked Up, Katherine Heigl took a break from playing pregnant for a cigarette break. Must be nice to take off the belly and light up. At base camp, near all the production trailers, Heigl sported a cute pink sweatsuit while she politely held her cig away from her visitors.

"This was my costume that I had a nine-months belly on that they just took off me, so it's all stretched out right now, she said. Today was a good tummy day and Heigl smelled like a dream. Those prosthetic bellies are notorious for their unique odor.

"That only happens if the guys making them don't have enough time the night before where you have to dry it out properly and then you get it on you and it just smells rotten and it's awful and everybody around you's like, 'Oh, Katie's on set with her belly' and it's disgusting."

Known for her dramatic work on TV’s Grey’s Anatomy, and Roswell before that, Heigl welcomed the chance to laugh all day on a movie set. She plays a woman who hooks up with a guy and then tries to have a relationship with them when they find they are about to become parents. This comes from Judd Apatow, writer/director of The 40-Year-Old Virgin.

"What I like about Judd and his style is that he's taking things stuff that everybody can relate to and relationship issues and hormone issues and kind of exaggerating it enough to be funny, but it's still honest and realistic and takes a very sort of hard look at what it's like to be in a situation like this and make it work and try to be responsible and try to do the right thing and try to be a grown-up because you're about to have a baby, but still being a child in a lot of ways. So I feel like it's going to be real funny. It's kind of right up my alley as far as the humor goes, but it's also very sort of poignant and honest."

Being on set with guys like Seth Rogan and Paul Rudd, there is always the danger of cracking up before Apatow calls "Cut." "Because of my fear of being fired, I would get it back for the scene. But yeah, especially in the beginning it was really hard for me and I'd feel so terrible and I'd keep apologizing because I knew I was ruining the takes, but the stuff that Seth will say is just so bizarre and hilarious and you can't help it and you start laughing. But I've gotten really good by now. We're about two months in. I've gotten really good at, I'll start to laugh and I can rein it in in about two-and-a-half seconds and I feel like that's good. I've gotten it down to like two seconds versus laughing for a minute and a half."

Shooting in Brentwood, California, Heigl didn’t have to leave home for the summer to make Knocked Up. "I've always loved shooting on location. I love new places and I love to travel, but this was a big year for me. I had so much going on and I just moved and I have lot of family in town, so it was actually really great to be here and not have to worry about doing all the stuff long distance that needs to get done. It's very difficult when you're working these kind of hours to have a life as well and to get the things done in your life that need to get done, just as far as going to CostCo and getting your toilet paper. It just gets complicated, so it's made my life easier to be around home, for sure. I miss traveling. I'd like to go on location next year, maybe."