Heidi Klum shared sizzling bikini photos to mark her 52nd birthday

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 . . .