That's Leonardo DiCaprio's girl, Bar Refaeli, set to be on the cover of next month's Sports Illustrated swimsuit issue.

David Letterman had the honor of revealing a Manhattan billboard of the Israeli babe's cover on his show Monday night. In the hot photo, Bar wears a colorful string bikini next to cover line "Bikinis or nothing."

This is a big deal for the model, who, for the past two years, had only had the privilege of gracing the inside of the mag. 

She obviously did something right to make it to the cover, and I'm guessing it may have had something to do with the way she's pulling on those bikini bottoms.