What better way to celebrate your birthday than with a pool party in Las Vegas!
Audrina Patridge sure knows how to turn another year older.
The reality TV star ditched the "Hills" for a poolside bash in the City of Sin to celebrate her 27th birthday.
Audrina wore a cute multi colored dress with wedges on the blue carpet but once she got to business and stripped down to her bikini.
Every since her stint on Dancing With The Stars Audrina's body has been looking killer and she was definitely a bikini babe on her big day.
She also brought along a group of friends as well as her long-time boyfriend Corey Bohan.
Downing drinks, soaking in some sunrays and cooling by the water... could it get any better?
Check out Audrina's birthday look in the gallery above.