Heidi Klum, 51, goes topless on the beach with husband Tom Kaulitz, 34, while celebrating their anniversary

Heidi Klum used Instagram on Saturday to mark a milestone in her relationship with husband Tom Kaulitz.

The 51-year-old supermodel — who has been called a ‘cougar’ for the 17-year age gap between her and Kaulitz, 34 — shared a video that showed her topless on a beach with the musician, resting her head on his back.

The blonde bombshell’s windblown locks blew across her face as she covered her modesty with a red-manicured hand as she lay on her beau’s back.

Tom was lying peacefully on his stomach while Klum recorded the moment.

She wrote in her caption: ‘Celebrating our love today and every day. Happy anniversary.’ 

Heidi Klum used Instagram on Saturday to mark a milestone in her relationship with husband Tom Kaulitz

The 51-year-old supermodel shared a video that showed her topless on a beach with the Tokio Hotel musician

The 51-year-old supermodel shared a video that showed her topless on a beach with the Tokio Hotel musician

The mother-of-four looked glamorous in a pair of sporty, white-rimmed Dolce & Gabbana sunglasses.

She tantalized her 12.1 million followers as she panned the camera to show her fit figure covered in sand.

The runway regular wore white, string, thong bikini bottoms as she smiled throughout the clip and kicked up her tanned legs.

Her glossy red pedicure matched her nails and she soundtracked the sunny snippet to the song Chateau by her husband’s band Tokio Hotel.

It’s unclear exactly what anniversary the two are celebrating as their wedding date is February 22, 2019. 

The pair got engaged after only one year of dating and tied the knot in a private ceremony, exchanging vows on a luxury yacht. 

The catwalk favorite often shares outtakes from her life with her husband on social media. 

Last week she posted a photo of them hand-in-hand on an airplane, writing, ‘Up up and away.’ 

Heidi and Tom tied the knot on February 22, 2019; pictured in January 2020

Heidi and Tom tied the knot on February 22, 2019; pictured in January 2020

The proud wife also shared a solo video of Kaulitz in her Instagram Story

The proud wife also shared a solo video of Kaulitz in her Instagram Story

Last week she posted a photo of them hand-in-hand on an airplane, writing, 'Up up and away'

Last week she posted a photo of them hand-in-hand on an airplane, writing, ‘Up up and away’

Klum was previously married to British singer Seal from 2005 and 2014. 

The exes also share sons Henry, 18, Johan, 17, and Lou, 14. During their marriage, he also adopted her daughter, Leni, now 20, when she was just five-years-old. 

The America’s Got Talent judge takes fitness and diet seriously to maintain her fit figure.

In a 2021 interview with Body and Soul she said, ‘I try to eat super healthy. We eat at like 6 to 6:30pm, [and having] home-cooked food, knowing what you’re eating is super important. 

‘I love healthy food; I don’t really eat much junk. I like to be fit and I like to feel fit. I know that when I gained a little bit [of weight]… I felt sluggish. I was like, “No, I have to get back into shape.”‘

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