Audrina Patridge's Wet Republic Birthday Party

Showing up for a belated birthday bash in her honor, Audrina Patridge was the picture of perfection at the Wet Republic pool in Las Vegas on Saturday afternoon (May 14).

The former "Hills" hottie stripped down to a multi-colored bikini as she and a group of friends hit up the MGM Grand locale to celebrate her 26th birthday (which was actually on May 9).