Heidi Klum is revealing her secrets on how she keeps her marriage to Tom Kaulitz spicy. "I mean we were just lingerie shopping," the supermodel, 52, tells PEOPLE exclusively ahead of her much anticipated return to Project Runway on July 31.

Heidi Klum opened up about the unexpected secret that keeps her marriage to Tom Kaulitz "spicy" in a candid interview with 'People' published on July 30.

In an interview with US magazine "People", Heidi Klum talks about what she's looking forward to as she ages and where she found her first silver hairs - not on her head.