Audrina Patridge was in Las Vegas for the weekend to host a party at The Nightclub. But of course, she knows very how to mix work and play, so she managed to spend some time at the pool in Nevada. She wore a skimpy black two-piece bikini as she played at the water with her friends. They sure made a scene--catching the attention of the young men around the pool. The brand new season of The Hills have aired this week so I'm sure it's going to be another busy quarter for the hottie. Here are her photos as she plays at the pool.