Heidi Klum says being confident about her looks is all part of being a good model.

The German beauty - who is one of the world's most successful supermodels - admits she has to be sure of her appearance otherwise her self-doubt would show in images of her.

She said: "It's part of being a good model - you have to become the fantasy for that moment. I know who I am as a person, but when you get to play different parts in front of the camera, you have to be that girl or this girl, what's wrong with that? There are worse jobs."

The mother-of-four is renowned for regaining her stunning figure after each of her pregnancies and believes a lot of it is down to luck.

She said: "I always eat sensibly and I think a lot of it has to do with genes. I think I'm a little bit lucky."

Heidi - who is married to singer Seal - admits being a mother has calmed her down as she will no longer do risky photo shoots.

The 'Germany's Next Top Model' host told Britain's Tatler magazine: "I still have the same values in life but I'm definitely not as crazy any more. Not that I was ever crazy-crazy because that's just not who I am, but I would do wild photo shoots. For example, yesterday Rankin was flaming up the girls with fire for 'Germany's Next Top Model'. I don't want to do dangerous things any more."