kristinpool1.jpgkristinpool2.jpgPhoto Credit: Denise Truscello / WireImage

Over the weekend Kristin Cavallari hosted a party at the Liquid Pool Lounge at Aria Resort & Casino in Las Vegas, and The Hills honey looked smokin' hot in a black Gucci bikini. And that cover up with the hands over her boobs? So clever!

When Kristin wasn't posing for pictures at the pool and starting a super soaker fight with partygoers, she relaxed in a private cabana and sipped on cocktails. After soaking up the sun, Kristin dined at Union Restaurant and later hit up The Bank Nightclub, and yes, Kristin also got paid bank to do all this...such a rough life!