LeAnn Rimes had triple the fun on her 29th birthday -- she wore three bikinis in one day!

The singer and her hubby Eddie Cibrian took a room Sunday at the Malibu Beach Inn as a bday celebration and mini getaway combo now that Eddie is back from filming The Playboy Club in Chicago.

A day of beach frolicking does a girl good - LeAnn couldn't stop smiling and showing off her tanned bod. Then again, she is known for her love of bikinis! LeAnn recently did an interview with Mikoh Swimwear (one of her fave bathing suit lines) and admitted that she likes to show off her bronzed skin, saying, "Tan lines all the way."

If you have the bikinis, might as well rock 'em!