In the picture, all four of her children sit with her on her birthday table. Her husband, Tom Kaulitz, is also on the table. Behind them, a balloon announces Klum’s age as 51.

While Klum is one of the biggest names on the planet with one of the most recognizable faces as well, her children are not as well known. She shares all four of her children with ex-husband and singer Seal. Her children are Leni, 20, Henry, 18, Johan, 17, and Lou, 14. While the kids have two mega stars as parents, they stay away from the spotlight themselves.

Klum and Seal’s eldest, Leni, however, has followed in her mother’s footsteps and has begun modeling. The mother-daughter duo also modeled for the Italian brand Intimissi together for their last holiday season campaign.

“It was only a matter of time before I would try to become a model myself,” her daughter said in an interview. “The first offer came when I was only 12 or 13, from a brand I liked to wear: Brandy Melville. At that time I begged my mother, but no chance. Now I understand that it would have been too early.”

Klum co-parents with ex-husband Seal, who has spoken about the arrangement previously. He said, “It requires teamwork. If you are a team, if both parents are a team, then it’s really easy and that’s not a real challenge at all,” he said. “But you have to be a team. And if you’re not a team, then it can all fall to pieces.”

On Instagram, Heidi routinely shares pictures with her husband, who is younger than her. She posted a picture of Kaulitz, 34, during a toast on her birthday and has spoken previously on what an amazing stepfather he is to her children.

She also shared pictures of herself poolside and topless. Some people became concerned about a certain detail that they hoped she would pay attention to. A person posted on X, “I saw the photo & hoped she’d had that mole checked.”

Another person chimed in saying they thought it was a spot, “Nipple looks like it’s in the wrong place! Oh, it’s a spot.”

While another X user thought it was a wart, writing, “I don’t get it. Showing off those big ole ti…..warts?”

It seems like people were confused about what the detail in the picture was and curious about it as well. Several people seemed to have different theories as to what it could be!