Heidi Klum is grilling – and she's doing it in a skimpy, polka-dot bikini. The 47-year-old supermodel and "America's Got Talent" judge updated her Instagram on Sunday with both photos and a video of her home cookout. Together with 31-year-old Tokio Hotel guitarist husband Tom Kaulitz, the blonde was also with the couple's two dogs. Heidi, who is proving that age is just a number, also proved bikinis are totally appropriate for a Sunday grill-out. Check out the photos and video below.