Credit: Nate Jones/

Close call!

While recently vacationing in Costa Rica, Heidi Montag -- who turns 24 Wednesday -- struggled to keep on her swimwear after a wave hit her.

Luckily, she was able to keep her G-cup breast covered up. See more hot shots of Montag's beach vacation.

Montag, who recently said she wants a breast reduction, has been tending to her bosoms lately, giving them morning massages.

"Giving my self a soft tissue breast massage," she Twittered Sept. 7. "Ladies we have to keep those implants soft."