Heidi Klum is proving that age really is just a number, and she’s making 52 look hotter than ever. To celebrate her birthday, the German supermodel lit up Instagram with a jaw-dropping series of bikini shots. Posing poolside in barely-there swimsuits from Calzedonia, she flaunted her famously toned figure and signature playful energy, leaving followers swooning and her comments section blazing.

© Calzedonia

Klum first grabbed fans’ attention in a striking purple bikini adorned with gold accents as she posed on a sleek glass balcony. She simply captioned the shot: “@calzedonia summer 2025.”

© Calzedonia

Next, Heidi showcased her physique while lounging on her side in a baby blue bikini beside an infinity pool. With the city skyline in the background, she flaunted her sculpted abs. And for this post, her playful caption read: “I’m ready for summer with my @calzedonia. Are you?”

‘The America’s Got Talent’ judge then cooled off in the pool wearing a glittery tie-dye bikini. And in her second-to-last shot, Heidi knelt by the pool flashing a radiant smile in a white crinkle-textured bikini with delicate brown embroidery. Finally, Klum stood tall in the pool, wearing a shimmering satin bikini that caught the light perfectly.

© Calzedonia

Beyond the glam shoot, Heidi gave fans a peek into her birthday celebrations with a sweet carousel of photos and videos. The highlights included a clear balloon with “Happy Birthday Heidi” in gold script and a floral-adorned birthday cake.

In one clip, Heidi beamed alongside her husband Tom Kaulitz as he manned the grill, adding cozy vibes to the celebration. Other clips captured a live band setting the mood, and even her pups playing in the garden.

Heidi shares four children, including 21-year-old model Leni, with her exes Flavio Briatore and Seal. In 2019, she married Tokio Hotel guitarist Tom Kaulitz.