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Does Gisele Bundchen have another genetically superior bun baking in her oven? Her reps aren't commenting, but the rumor mill in her native Brazil is cranking with whispers that she may be expecting baby No. 2.

Tom Brady's leggier half was in Sao Paulo last week promoting her HOPE lingerie collection, and although she didn't give off a hint of any belly swelling while posing in a bra-showcasing lace shirt (below), sources close to the supermodel have supposedly been spilling the news, according to House of Models columnist Fabio Lage.

Brazilian paper Agora also claims "those responsible for dressing the model at recent events noticed changes in Gisele's body," which, granted, could mean she just had an extra serving of salad at lunch.

Bundchen, 31, is already mom to Benjamin, who made his debut in December 2009 via home delivery in a bathtub, and stepmom to Brady's 4-year-old son, Jack, with ex-girlfriend Bridget Moynahan.

The square-jawed twosome enjoyed a second honeymoon of sorts with a trip to Costa Rica in late February, not long after the New England Patriots lost the Super Bowl and Gisele was overheard griping of the quarterback's teammates, "My husband can not [bleeping] throw the ball and catch the ball at the same time. I can't believe they dropped the ball so many times."

The model mogul has made no secret of her desire to expand her brood, and the family recently completed work on a $20 million, 22,000-square-foot estate in Brentwood, Calif.


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