Even though she's an internationally renowned supermodel, Heidi Klum says her children are the ones who make her most beautiful. "In my job, people tell you that all the time: 'This shoot was great. You look amazing.' But you never know what they say when you turn away," she told ELLE. "But the kids don't edit anything. When they kiss you and tell you they love you and say, 'Mama, you're the best,' that's really the only thing you care about."