Heidi Klum’s son is celebrating a monumental moment.

The supermodel, 52, shared a few photos and videos on her Instagram as she celebrated her son Johan’s high school graduation. In one clip, Johan, 18, can be seen walking across the stage and getting his diploma. A second video shows Klum, wearing big sunglasses, kissing her son on the cheek.

She also included a photo of herself with Johan, who holds up his diploma and points at it for the picture. Klum’s other son Henry, 19, smiles alongside his younger brother.

“Cheering you on today and every day ❤️ CONGRATULATIONS JOHAN 🎓🥳🙏❤️ my heart is full of joy and pride ❤️❤️❤️❤️,” Klum wrote in her caption.

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Klum is mom to four kids, — Leni, 20, Henry, Johan and Lou, 15 — whom she shares with ex-husband Seal, who was also present at the graduation.

Back in March, Klum spoke with Access Hollywood and shared that her older son Henry, who made his runway debut at Paris Fashion Week that January, asked her for some advice when he told his mom he wanted to become a model.

“They ask me about it. Especially my son Henry,” Klum responded when asked if her kids ever get advice from her on modeling. “He was like, ‘Oh, what should I do?’”

“In any case, it’s funny that he asked me, you know? He was like, ‘You know mom, I really want to get into modeling, what do you think about it?’ ” the proud mom recalled. “I’m like, ‘Wow! Who knew that you wanted to do this? I thought you were always more into music and different types of things,’ and all of a sudden he was like, ’Yeah, I want to give this a shot. Do you think I can do this?’”

“And I’m like, ‘You’re like, so handsome of course you should do this.’ So he strutted around a little bit at home,” Klum shared.

As for his siblings, sister Leni is already a model, but his other sister Lou is starting to take an interest in the industry, too.

“She also is kind of, at the gate with the hoof. She’s like, ‘Ok, when can I do this modeling stuff?’ ” Klum shared. “I’m like, ‘You just turned 15. Let’s wait a hot minute.’”

Last October, Klum spoke with PEOPLE and shared that her son Johan had been touring colleges ahead of his high school graduation. The mother-son duo even toured a school in New York City that week, which Klum said plays to the teenager’s artistic interests.

“Today, we actually toured Parsons [School of Design] for my second son, Johan,” Klum told PEOPLE. “Johan is very much into the arts and making clothes. So today we toured Parsons.”