CELEBRITY
01/05/2012 09:18 am ET | Updated Mar 06, 2012

Kristin Cavallari's Birthday; Reality Star Turns 25, See Her Sexiest Bikini Looks (PHOTOS)

Forget about The Hills, Kristin Cavallari is proving to be quite the stunner all over the world. And today, Jan. 5, she celebrates her 25th birthday.

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