Why is Heidi Klum sexy?

Heidi Klum has come out with the secret behind her sexy body. "You have to work out to be sexy. People always ask me how I stay in shape and how do I do it. But what really makes me do it is the hot man waiting at home for me," she said. Adding, "So I don’t want to be a slouch bag; I have to keep up appearances."

But that’s not the only revelation she made. Heidi has also admitted that she had no inhibitions in walking around in her lingerie or even nude in front of the three kids she and husband Seal are raising together! "To see me in my underclothes is nothing too unusual. People are pretty open with their bodies in Germany, and the children see you naked or in lingerie all the time, so it’s not a big deal for us," she said at the opening of the flagship Lexington Street VS Store. "We don’t hide inside a room somewhere and change – it’s all very out in the open!"