Heidi Montag's wearing a bikini malfunction in Costa Rica

With her new supersonic breast implants, keeping a tiny strapless bikini in place was always going to be a tough task. And it's something Heidi Montag found out to her cost when one of her pneumatic breasts nearly escaped from her top as she splashed around in the Costa Rican surf.

The 25-year-old star looked vaguely horrified at her bikini malfunction as she frantically tried to keep things covered up.

Montag, who was wearing a nose plaster to keep her surgically enhanced nose in place, struggled to keep her swimwear on in the Costa Rican surf

Montag's blue and red two piece looked ill fitting on her new breasts as she strolled along the beach in the sunshine

Luckily, she recovered enough to walk down the beach displaying her surgically enhanced figure in blue bikini top and red patterned bottoms with no further mishaps. The slip up may have given Montag more reason to regret having made her breasts so big - she recently confessed she is already thinking of having her G cups reduced.

'I’m desperate to go back to normal,' she confided to U.S. magazine Life & Style. 'I’m downgrading and going a little smaller, to a D or a double D. 'I'm obsessed with fitness but it’s impossible to work out with these boobs. It’s heartbreaking. I can’t live an everyday life.'

Montag showed off her trim figure after undergoing liposuction on her waist, hips and inner and outer thighs last year

The former Hills star was also wearing her nose plaster to keep things in place following her infamous ten plastic surgeries in one day last November. Montag underwent a mini brow lift, Botox in her brow and frown line area; a nose job; fat injections in her cheeks, nasolabial folds and lips; chin reduction; neck liposuction; had her ears pinned back; a breast augmentation revision; liposuction on her waist, hips and inner and outer thighs; and a buttock augmentation.

The star had headed to Costa Rica to be in supposed seclusion after announcing she was officially divorcing her husband Spencer Pratt who she married last year. However, the star has clearly not escaped the paparazzi, being photographed with her estranged husband swapping their dogs in a bizarre custody deal, as well as sipping cocktails and posing in the surf.

Montag headed to Costa Rica after declaring she was getting a divorce

from husband Spencer Pratt