Credit: Victor Chavez/WireImage; Jeffrey Mayer/WireImage

Kimora Lee Simmons has conquered the battle of the bulge.

At QVC's "Buzz on the Red Carpet" cocktail party in Beverly Hills Thursday, the 36-year-old mother-of-three explained how she slimmed down after giving birth to son Kenzo (with husband Djimon Hounsou) in May 2009.

"I'm on the fabulosity diet, so I'm kind of perfecting it now. It's a little workout, a good diet," Simmons told Us Weekly. "I try to cut out a little bit of the sweets and the junk, but I love that, so it's a little hard."

The former Baby Phat creative director said it's hard to avoid her favorite foods, including "chocolate, candy, chips and pizza," but she tries to instill healthy eating habits in daughters Ming, 12, and Aoki, 11.

"My family is very healthy. We try to be very healthy with complex carbs, lots of fresh fruits and vegetables," she told Us. "we try to eat organic, not a lot of dairy, so they're into the rice milk and the almond milk and a lot of legumes. They're really healthy kids."

The ex-model added that despite her more svelte figure, she still feels "voluptuous" and "sexy."

"I'm a mom first and I'm a business woman [second]," Simmons said. "I want girls to understand the difference between this and fantasy. . .It took me an hour to get ready, and I want girls to know, 'Take it easy! You're beautiful.' Size 2 is really unreal."