Beyonce Treats Self To Pizza One Day A Week + Works Out Hard

There's NO doubt about it. Beyonce's got a post-baby bangin' body! And so many people are obsessed + fascinated with EVERYTHING Beyonce.

There she is--the fab cover girl for Shape magazine's April issue and she's dishing. The 31-year-old superstar claims she gained 57 lbs. while pregnant with baby daughter Blue Ivy in January of last year.
She looks sexy + curvy, and admits she's NOT a skinny gal:

"I'm not a person that is naturally very thin. I am a person that has to work at keeping my body in shape."

If the singer had her way, she would indulge in PIZZA all the time, but because it is full of calories, she only treats herself to PIZZA, once-a-week, on Sundays.

Beyonce admits that she shed the post-baby lbs.very quickly, "because I scheduled a show three months after I gave birth, which I would never do again!' she tells America's Shapemagazine."

Beyonce also worked out like crazy to get back to her gorgeous figure. The magic is in the diet. She told Shape that '80 percent of her post-baby weight loss was due to cutting out foods like her other fave-- pasta.

"I ate a very low-calorie diet. I stayed away from red meat and ate a lot of fish, replaced pasta and rice with quinoa," Beyonce says.

"I always have breakfast, say, scrambled egg whites, a vegetable smoothie, or whole-grain cereal with low-fat milk. For lunch and dinner, I eat a lot of fish and vegetables. And throughout the day, I try to stay hydrated."

Excellent tips, Beyonce!