Kate Upton: "I'm Not Going to Starve Just to be Thin"

| by Michael Allen

Kate Upton, who splashed into worldwide fame as the cover girl of the Sports Illustrated swimsuit issue, hit back at the web site, which said she looked fat in a recent Carl's Jr. ad.

Upton told Fox411: "I'm not going to starve just to be thin. I want to enjoy life, and I can't if I'm not eating and miserabe."

Justin Hooper, creative director of the ad agency that worked with Upton on the Carl's Jr. campaign, told Fox411: "Kate's probably the hottest girl we've ever worked with. We love each of the women we've worked with, but there's something about Kate that's so All-American, so beautiful and very classic."

Upton said of the Carl's Jr. shoot: "It's the Southwest Patty Melt, and it's one of their classics, but now they're adding a little spice-adding some jalapeños and making it a little bit hotter. I'm a '50s girl with a little cardigan on, a really sweet kind of a girl. But then I take a bite and all of a sudden, I'm sweating, and I'm taking off all of my clothes and I'm in my lingerie!"