Audrina Patridge's 15 Hottest Bikini Moments

Teeny tiny bikinis! Exotic beaches! Count down The Hills star's sexiest days in the sun in honor of her birthday

15. Vegas Baby!

Getting the party started early, Audrina headed to Sin City this weekend, where she has a pre-birthday (the starlet turned 25 on May 9!) drink poolside in a fringe-topped bikini at the Aria Hotel and Casino's Liquid Pool.
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