460gisele-yurman-050912-%20%283%29.jpg460Screen-Shot-2012-05-11-at-8.40.01-AM-620x347%20copy.jpgDavid Yurman

Gisele Bundchen's baby bump was definitely visible on a recent trip to Brazil, but it seems to have completely vanished in the latest campaign photos for jewelry brand David Yurman!

The world's highest paid supermodel struck sexy poses in a black bikini on the beach for the luxury brand's newest collection, but she appears to have a totally flat tummy in these gorgeous black and white in images.

Bundchen hasn't officially announced she's pregnant with her second child with New England Patriots Quarterback Tom Brady, so that could explain the missing bump in these stunning pix!

4600.jpgDavid Yurman