Gisele Bundchen shows off bulging belly on the beach

New photos of supermodel Gisele Bundchen on a beach break with her son Benjamin appear to suggest the Brazilian beauty won't be able to keep her much-rumoured pregnancy a secret for much longer.

Bundchen was snapped hanging out in Costa Rica on Monday (23Jul12), wearing just a floppy hat and a two-piece bikini - and she's no longer hiding her bulging belly.

Reports suggest the beauty will be a mum again early next year (13), but she and husband Tom Brady have yet to confirm the gossip.