Kourtney Kardashian Stuns In A Bikini

This is the summer of fabulous bathing suits for Kourtney Kardashian.

She has made headlines in recent weeks thanks to her water wear, sporting cutout swimsuits and bright colored one-pieces.

Kourtney told Us Weekly in January that she gained nearly 45 pounds during her pregnancy with baby Penelope.

She used celebrity fitness guru Tracy Anderson's 90-minute dance-focused exercises and cut her portions to get back down to 105 pounds.

”It took me twice as long as last time but I feel healthy and really much better about it,” Kardashian wrote on her Celebuzz blog.

And now that summer is in full swing, Kourtney is showing the world all of her hard work.

In the picture below, taken Tuesday July 23, she struts her stuff in a black and white string bikini at the Setai hotel in Miami.