Is that a baby bump or did Gisele Bündchen just eat a bagel?

Several new photos that appear to show the super slim model with a bit of a bump have renewed speculation that Bündchen, 31, is pregnant.

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On June 1, she was photographed in Boston showing a very slightly rounded tummy. On June 5, the model, who is known for being super fit, was snapped at an event in Rio de Janeiro with a small bump under her sweater.

Already mum to 2½ year-old son Benjamin Rein with hubby Tom Brady, 34, Bündchen has said she loves being a mum.

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In 2007, she even hinted that she may want a big family like her parents, who have six children.

Bündchen's rep did not immediately return calls for comment.