Heidi Klum is taking the phrase “letting it all hang out” to new heights as she continues to ditch her bikini top on her St. Barts vacation.

Photos taken on Monday showed the “America’s Got Talent” judge, 52, baring her chest, wearing only a pair of black thong bottoms as she hit the waves with her husband, Tom Kaulitz.

The two lovebirds were caught in snaps engaging in some heavy PDA during their beach outing. At one point, Klum was photographed with her arms wrapped around the Tokio Hotel guitarist, 36, and planting a smooch on him.

In another picture, the pair held hands as they trudged through the island’s clear waters on the sunny day.

Klum accessorized her skimpy swimsuit look with a long silver necklace that fell around her chest and a pair of aviator shades. Before arriving at the beach, she covered up with a flowy, yellow halter top and white baseball hat.

Kaulitz, on the other hand, sported a pair of leopard print swim trunks and a gray cap for the casual occasion.

This new outing comes after the supermodel was spotted — on multiple occasions — showing some extra skin on her holiday getaway — Klum has been photographed baring her breasts on the beach many times in the last few weeks.

On Dec. 26, she was snapped wearing only brown thong bikini bottoms, a necklace and a white baseball hat as she splashed around with Kaulitz.

The couple had their love on display as cameras caught the two stars holding hands. Klum was also seen sipping on a beer during the excursion.

She was later seen on Dec. 28, flashing her chest in a pair of tiny white and red cherry-printed bikini bottoms on her lower half.

Earlier this week, Klum gave her Instagram followers an inside glimpse at her dreamy vacation by sharing a photo of herself lounging on a Gucci towel by the water at sunset. She wore nothing but black thong bikini bottoms.

“Golden hour

,” she captioned the snap.

The couple took off to St. Barts last month after enjoying Christmas in New York City.