Relaxing at the beach': Adriana Lima flaunts rock hard abs and ample cleavage while smoldering in a skimpy bikini

Adriana Lima is never one to back down from a grueling fitness challenge.

And the results have paid off as evidenced by an Instagram photo shared on the 34-year-old model's account Thursday.

The Victoria's Secret Angel captioned the snap: 'Relaxing at the beach in my @calzedonia bikini.'