Katharine McPhee is excited about her first movie role.

She happily told People that for Adam Sandler's House Bunny she'll wear a Nicole Kidman hand-me-down. A very unique hand-me-down.

"I tried on [Knocked Up star] Katherine Heigl's belly. I tried on Nicole Kidman's belly. And they said, 'Oh, this one fits perfectly. We don't need to try any more.' I was so happy, because I didn't have to sit through hours of prosthetic fitting," the American Idol runner-up said.

"There was nothing wrong with Katherine Heigl's belly," continued McPhee. "But every stomach is different. It's light foam, but it makes you sweat. Heigl's felt funny on my stomach and sat higher. [In this project], I'm in my ninth month, so I should be hanging kind of low."

Dispelling any possible pregnancy rumors, McPhee was enjoying a glass of red wine and the company of her boyfriend, Nick Cokas.

"In Stuff magazine, they said I want to have 15 kids." She added, "I was obviously exaggerating."

Also in Stuff? Some very hot Katharine McPhee photos. You should check them out.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.