Heidi Klum flaunts her figure in a pink bikini during

Heidi Klum flaunts her figure in a pink bikini during her vacation in Sardinia with husband Tom Kaulitz

Heidi Klum looked nothing short of sensational on Sunday as she stripped down to a skimpy pink bikini while sunbathing in Sardinia.

The 50-year-old model was joined by rocker husband Tom Kaulitz, 33, as they packed their PDA and enjoyed a day on the beaches of Cala Volpe Bay.

Heidi made sure to turn heads as she slipped her toned frame into a skimpy pink two-piece with white crochet embroidery along the edge.

The German beauty eventually added dark sunglasses and a beige sports cap, while her blonde tresses cascaded down her shoulders.

Tokio Hotel musician Tom, meanwhile, showed off his muscular frame in burgundy and white patterned swim trunks and complemented his look with black sunglasses.

Hot thing: Heidi Klum looked nothing short of sensational on Sunday as she stripped down to a skimpy pink bikini while sunbathing in Sardinia Wow!  By the time Heidi reached the beach on the Italian island, temperatures must have been skyrocketing

Hot thing: Heidi Klum looked nothing short of sensational on Sunday as she stripped down to a skimpy pink bikini while sunbathing in Sardinia

Couple goals: The 50-year-old model was joined by rocker husband Tom Kaulitz, 33, as they packed their PDA and enjoyed a day on the beaches of Cala Volpe Bay

Couple goals: The 50-year-old model was joined by rocker husband Tom Kaulitz, 33, as they packed their PDA and enjoyed a day on the beaches of Cala Volpe Bay

Looking good: The couple showed off their toned figures in the swimwear while enjoying a day at the beach

Looking good: The couple showed off their toned figures in the swimwear while enjoying a day at the beach

The couple could hardly keep their hands off each other as they frolicked in the sea together.

Then they went to the sun loungers, where they kissed and relaxed together.

Heidi certainly looked in tip-top shape as she flaunted her figure while stretching out on the lounger to top up her tan.

At one point, she removed her bikini top to ensure she didn’t get unsightly tan lines on her back.

Heidi has given fans a glimpse of her luxurious Italian vacation by posting a slew of sun-kissed snaps to her Instagram.

On Wednesday, Heidi looked incredible in a fashionable combo set while enjoying a day of fun on a boat.

The Sports Illustrated swimsuit star showed off her toned abs and looked as stylish as ever in a Jean Paul Gaultier dress with a Mona Lisa print.

She complemented her chic outfit with a gold belly chain and let her tresses flow down in waves.

Flaunting: Heidi made sure to turn heads as she slipped her toned frame into a skimpy pink two-piece with white crochet embroidery along the edge

Flaunting: Heidi made sure to turn heads as she slipped her toned frame into a skimpy pink two-piece with white crochet embroidery along the edge

The eye-catcher: All eyes were on Heidi as she slipped into a barely-there bikini for her beach trip Fabulous: The beauty flaunted her figure in a bikini

The eye-catcher: All eyes were on Heidi as she slipped into a barely-there bikini for her beach trip

Beach babe: The German beauty wore dark sunglasses and a tan sports cap at one point, while her blonde tresses cascaded down her shoulders

Beach babe: The German beauty wore dark sunglasses and a tan sports cap at one point, while her blonde tresses cascaded down her shoulders

Chilled out: Heidi and Tom looked very relaxed on their sun-soaked beach trip together Fit: The couple showed off their gym-trained physique

Chilled out: Heidi and Tom looked very relaxed on their sun-soaked beach trip together

Going for a walk together: The couple was as in love as ever on vacation

Going for a walk together: The couple was as in love as ever on vacation

Bliss: Heidi and Tom romped around in the sea together during the idyllic day trip Fun: They put on an animated show in the sea

Bliss: Heidi and Tom romped around in the sea together during the idyllic day trip

Cheers: The couple enjoyed a bottle of beer while paddling in the sea together

Cheers: The couple enjoyed a bottle of beer while paddling in the sea together

Along with several stylish snaps, she also shared two videos of herself taking a boat trip.

Heidi recently celebrated her 50th birthday and said she still feels 25.

She admitted she feels half her age and has “more energy” than her husband, who is 17 years her junior.

She told Entertainment Tonight, “I’m not going to let that number change my path or what I do, to be honest.”

“It’s just a number to me, you know? Because I don’t feel 50 inside. I mean, sometimes I look in the mirror and I’m like, “Oh yeah, I’m 50.”

Drink up: The America's Got Talent star smiled as she enjoyed her beer

Drink up: The America’s Got Talent star smiled as she enjoyed her beer

Flaunting: The beauty was smitten as she reclined on the sun lounger

Flaunting: The beauty was smitten as she reclined on the sun lounger

Conclusion: Then they went to the sun loungers, where they kissed and relaxed together Racy: At some point, Heidi slipped out of her bikini top while lying down with her husband

Conclusion: Then they went to the sun loungers, where they kissed and relaxed together

Time to tan: At one point, she removed her bikini top to make sure she didn't get unsightly tan lines on her back

Time to tan: At one point, she removed her bikini top to make sure she didn’t get unsightly tan lines on her back

“But inside I feel like I’m 25. I’m full of energy.” “My husband is 33 and I know I have more energy than him!”

“So I feel like so far so good… the birthday doesn’t change anything for me.” “My passions are the same — I love traveling and being there for my family.”

Heidi, who has children Leni, 19, Lou, 13, Henry, 17, and Johan, 16, with her ex-husband Seal, added that the celebrations for the big day mean that she’s doing all the planning herself have taken from her husband.

She said, “I blamed my husband!” Because usually I’m the one, for the four kids I always come up with a big party, or you know, for me of course [husband].

“Well, I always like to throw big parties, invite all my friends, and think about all the shenanigans that come with that.”

“But I was like, ‘You know what? I’m 50 honey this party is for you to find out he cares for me. So I’m excited! I’m just going to sit back and… ‘enjoy the day.’