Audrina Patridge spent the day at the Liquid Pool in Las Vegas on Saturday celebrating her 25th birthday.
Each week it seems these theme pools host some sort of event with a pseudo-celeb in tow. Two weeks ago it was Audrina's "Hills" costar Kristin Cavallari who hosted a party at the Liquid Pool; and earlier in April Heidi Montag used the opportunity to show off all her new "enhancements" at the MGM Grand's Wet Republic pool. In fact, former "Girls Next Door" star Holly Madison practically shows up to every event in Vegas - pool or not!
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