PHOTOS: Kristin Cavallari's Teeny Weeny Black Bikini At Vegas Pool Party

The Hills have eyes -- and long legs too, as shown by gorgeous MTV star Kristin Cavallari, who strutted her stuff hosting a shindig at Liquid Pool at Aria Resort in Las Vegas, Nevada on Saturday.

RadarOnline.com has all the pics of Cavallari, who wore a see-thru top and teeny weeny black bikini to the affair, showing off her flawless figure.

The affair gave Cavallari a chance to show off her charitable side, as well, as she Tweeted she was donating "a good chunk of the proceeds" from the bash to the charity One Kid One World.

"Every little bit counts ;)" she Tweeted.