There's no doubt about it: Heidi is Germany's hottest export. The supermodel and fashion mogul was born in Bergisch Gladbach, outside of Cologne, Germany, in 1973. She started modeling straight out of high school, and after a few years working in Europe, made the move across the pond where she achieved superstardom. The model-mommy became an American citizen in 2008, though she maintains German citizenship as well. Proof that she's authentic? Heidi cooks schnitzel -- and can yodel!