It's the kind of situation nightmares are made of. But for Heidi Klum posing in nothing but her underwear couldn't be easier - it's speaking in public that keeps her awake at night. Scroll down for video. We all know that Heidi Klum looks incredible in her underwear, which is perhaps why her own lingerie line - Heidi Klum Intimates - is so sought after. We're all secretly trying to replicate a little of Heidi's sexiness.