VIDEO : Heidi Klum (45) Talks About Her 28-Year-Old Boyfriend

For 45-year-old Heidi Klum, age ain't nothing but a number!
Extra reports that the ?America?s Got Talent? judge has been going steady with musician Tom Kaulitz, 28, for months.
And the former model says that their 17-year age gap doesn't affect their relationship and that she rarely thinks about it.
Klum told InStyle, "Lately, I?m being reminded more about my age by people other than myself. That?s really the only time when age seems to be shoved in my face and I have to give an answer for it."
Heidi says that stress breeds wrinkles.
She explained, "You have to just live a happy life without worrying too much about what people think because worrying is only going to give you more wrinkles.?
Tom isn't the first younger guy that Heidi's dated. Prior to their relationship she was linked to art dealer Vito Schnabel, 31.