Gisele Bundchen: Bikini Babe in Costa Rica!

Gisele Bundchen shows off her bikini bod at the beach on Monday (August 8) in Costa Rica.

The 31-year-old Brazilian supermodel soaked up the sun with some pals and took a dip in the ocean with her 20-month-old son, Benjamin.

PHOTOS: Check out the latest pics of Gisele Bundchen

Gisele is currently in the running for the “Greenest Celebrity” title for the 6th International Green Awards for Creativity in Sustainability.

She’s up against Cameron Diaz, Leonardo DiCaprio, Don Cheadle, Sir Paul McCartney, Sting, and Mexican actor Gael Garcia Bernal.

To vote for your favorites, check out GreenAwards.com!