Alessandra Ambrosio's little bun in the oven is already famous!

The pregnant Victoria's Secret supermodel shows off her bump on the cover of Spanish weekly magazine, Yo Dona, where she rocks a tight, curve-hugging black mini and gold jewelry.

In her multi-page photo spread, the Brazilian beauty works the camera in different glammed-up looks. But fans of Ambrosio may be most interested in the pic where she is chowing down on a slice of pizza while dressed down in a sweatshirt with hot rollers in her hair.

PHOTOS: Alessandra's incredible body

Last week, the 30-year-old star announced via Facebook that she and her long-time fiance Jamie Mazur are expecting a little boy.

"We really tried to keep it a surprise but we were too anxious!" she explained to fans. "Soon, we will have a little boy to rock our world!!"

PHOTOS: More supermodel moms

The couple already has a three-year-old daughter, Anja.

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