I love Karl Lagerfeld. I worship him. I was brought up in Paris, and my mum used to wear a lot of Chanel. I love the brand.

My grandma said - when I was really young and I'd sing along to the radio - why do you sing in an American accent? I guess it was because a lot of the music I was listening to had American vocalists.

I was working on 'Harry Potter' while I was growing up, and the attention it brought me made me feel quite isolated.

I can be 100 years old but I will always be proud to say I was in Harry Potter.

Photographers want to reinvent you, to take you somewhere else, to show you in a completely different way. They look at your previous work, and try to figure out what they can do to show a new side of you.

As a younger woman, that pressure got me down, but I've made my peace with it. With airbrushing and digital manipulation, fashion can project an unobtainable image that's dangerously unhealthy. I'm excited about the ageing process. I'm more interested in women who aren't perfect. They're more compelling.

I love people like Renée Zellweger who aren't afraid to look unattractive and really put themselves into a character role and to really be an actress instead of just thinking "Am I on-screen pouting and looking beautiful?" because that's not really what it's about.