LeAnn Rimes Credit: twitter.com

Cheers to LeAnn!

She doesn't officially turn 30 until August 28, but LeAnn Rimes chose to celebrate her milestone birthday a little early at a beach bash this week.

"HUGE thx to @donjulio for providing the tequila and awesome mixologist for my 30th bday!!!" Eddie Cibrian's bride, clad in a white bikini and bandana keeping her loose locks at bay, tweeted August 21, along with a picture of her party's liquor spread.

Three days earlier, Rimes smooched hubby Cibrian, 39, for an up-close-and-personal twitter pic she captioned: "THIS is a HAPPY 30th BIRTHDAY!!!!??

As she prepares to turn a year older, the country singer -- who wed Cibrian in April 2011 -- didn't totally party the week away. The "bonus mom" to Cibrian's sons with ex-wife Brandi Glanville, Mason and Jake, helped send the boys off to class.

"Gotta get off of here soon," she tweeted. "I have blogs to write, a website to finish today and kiddos to get ready for their first day of school."