LOS ANGELES: Supermodel Heidi Klum is engaged to her musician boyfriend Tom Kaulitz. The 45-year-old German model announced her engagement to Tokio Hotel guitarist Tom Kaulitz in an Instagram post on Monday. She has been dating the 29-year-old Kaulitz for nearly a year. The post featured a black-and-white photo of the couple, with Klum showing her diamond ring and writing, “I SAID YES.” She went public in May about her relationship with Kaulitz. Klum, a judge on “America’s Got Talent,” has three children from her marriage to Seal.