Audrina Patridge Celebrates Memorial Day In A Bikini [PHOTOS]

Audrina Patridge spent the holiday weekend in Cabo San Lucas, Mexico for a friend’s bachelorette party.  The reality star must be following LeAnn Rimes’ diet, because she was looking uber-slim in a bevy of bikini shots as she rode the waves and made a human pyramid with friends.

PHOTOS: Audrina Patridge Joins Her Family On The Red Carpet

Unlike Rimes, who denies that she’s VURY skinny, Audrina is up-front about her active lifestyle.  According to the Daily Mail, Patridge’s strict exercise regimen consists hikes at Runyon Canyon, swimming, dancing and wearing heels to vacuum, “because it works my calves and my butt!” she says.