AceShowbiz -

LeAnn Rimes is celebrating her 31st birthday with Eddie Cibrian in a Hawaiian-themed party. "I'm getting ready!!" she captioned a photo of her cozying up to her hubby. "Loving my @ACACIASWIMWEAR Hawaiian print bikini for my luau bday celebration."

Rimes will officially turn 31 on August 28, but she has already kicked off the celebration early. "I just blew out my first bday candle for 31 w/ all my extended family & our waiter singing to me. He was great!!" the singer tweeted over the weekend.

Her love rival, Brandi Glanville of "The Real Housewives of Beverly Hills", couldn't resist dropping the b-word when wishing her a happy birthday on Twitter. The former wife of Cibrian wrote, "Happy Birthday @leannrimes xob."

Aside from her constant war of words with Rimes, Glanville recently got unfavorable comments for attacking a TSA agent while waiting in line at Los Angeles International Airport. The Bravo reality star spat, "Standing in security line at LAX! So slow!!! Grrrr."

Once she was "finally on a flight," Glanville added, "Here is a GIANT F**K U to the TSA F**KHEAD that made me miss my flight! I will be in the airport 4 a bitU have ugly eye brows and smell bad."

Her camp seemed to try to make her remove the angry message due to the amount of negative feedback as she later tweeted a cryptic note, "My publicist just asked me to take down a tweet... does'nt he know that this only makes it worse?"

Rimes and Cibrian will also soon have their own TV show on VH1.