Audrina Heats Up The Pool In Sin City

courtesy of WireImage

Before partying it up in Hollywood, Audrina Patridge celebrated her 25th birthday at the Liquid Pool Lounge at the Aria Resort & Casino in Las Vegas, and the Hills hottie was accompanied by her boyfriend Ryan Cabrera as she splashed around and munched on a delicious custom cake. Naturally the lovebirds got into a food fight, and even though Ryan kept his luscious locks covered with a hat when he jumped in the pool, Audrina had a great deal of fun squirting her fellow partygoers with a giant Super Soaker. HOT!