Heidi Klum used Instagram to share a new bikini-clad photo with her 12.5 million followers on Friday.

The 51-year-old mother-of-four bared her washboard abs in a black and white two-piece swimsuit while standing near a large pool.

Klum — who attended the American Music Awards with her 19-year-old son Henry — wrote in the caption, ’86 *F ☀️ Los Angeles.’

The German supermodel will celebrate her 52nd birthday on June 1, but looks years younger thanks to a healthy, active lifestyle.

In addition to Henry, she shares son Johan, 18, and daughter Lou, 15, with ex-husband Seal. The 62-year-old British singer also helped her raise 21-year-old daughter Leni, who she has from a previous relationship.

Heidi Klum used Instagram to share a new bikini-clad photo with her 12.5 million followers on Friday

Heidi was married to musician Seal from 2005 until 2014. She is now married to Tokio Hotel music artist Tom Kaulitz, who is 35.

Ahead of her 50th birthday two years ago, the blonde bombshell told Entertainment Tonight, ‘To be honest, I don’t let this number change my path or what I do. It is, for me, just a number, you know?’

She added, ‘Because I don’t feel 50, internally. I mean, sometimes I look in the mirror and I’m like: “Oh yeah, I am 50.” But internally, I feel like I’m 25.’

Heidi, who is also known for judging America’s Got Talent in addition to modeling, gushed at the time: ‘I’m full of energy. My husband is 33 and I know I have more energy than him!’

She noted that ‘the birthday doesn’t change anything for me. My passions are the same passions — I love to travel and be there for my family.’

The Germany’s Next Top Model host takes fitness and diet seriously to maintain her 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.”‘

Heidi attended the American Music Awards with her 19-year-old son Henry on Monday

Klum is now married to Tokio Hotel music artist Tom Kaulitz, who is 35; pictured May 22

Heidi will turn 52 on June 1, but looks years younger

Klum and Kaulitz, who is also German, got engaged after only one year of dating.

They tied the knot in a private ceremony on February 22, 2019, exchanging vows on a luxury yacht.

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

And the pair have been known to frequent nude beaches while vacationing outside of the states.

Last summer the former Victoria’s Secret Angel called her choice to go without a top in St. Barts ‘no big deal.’

She told DailyMail.com that she ‘grew up with a lot of nudity’ and encourages others to strip off on the beach.

‘Even though I am American, I’m also very much European, so I grew up with a lot of nudity on the beach,’ the multihyphenate explained.

‘So for me, this would be no big deal. Plus I was on a French island, and if you look around, most girls are topless, so it’s just a very common thing,’ Heidi emphasized.