Former "Hills" star Audrina Patridge celebrated her 27th birthday at Wet Republic at the MGM Grand yesterday ... by donning her customary two piece outfit.
Like some parts of Audrina, seeing her in a bikini never gets old.
Audrina Patridge in a Bikini
Ho-hum ... More Bikini Photos
5/13/2012 8:55 AM PDT BY TMZ STAFF
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