By Breaking Celebrity News Staff

Heidi Klum clearly isn't bashful about sharing her hot body with her 1.2 million Twitter followers!

The gorgeous German supermodel took her bikini top off and tweeted a sexy snap of herself lounging on a tropical beach on Tuesday – and Breaking Celebrity News has the photo.

"Island speed," the 39-year-old captioned the racy image of her famous figure.

In the photo, a makeup-free Klum is sprawled face down on a lounge chair on a deserted beach, wearing only black bikini bottoms.