I now know how to walk around properly in my undies. People would keep telling me to push my tits out! I also now know how to use a whip on people without causing bruising.

There are lots of great movies coming out of the U.S. but it's not something I've ever really been interested in. They're great films but I much prefer the smaller independent films, which are more thought provoking and experimental.

I was very similar at 19. I wanted something to happen in life, I wanted a bit more. I wanted to find someone who could challenge my ideas. So I definitely tapped into that.

The whole size zero debate is disgusting. My sister, who's 13, looks amazing - but she's already worried about her figure.

Weight doesn't matter as long as you're happy with yourself.

There's not enough money in the world to get me singing 'Because We Want To' again. I wouldn't do it. I think Beyonce Knowles got a couple of million for a private show but I would be happy to turn it down.

I think it must be hard being David [Tennant]. I get a certain level of attention but - I've seen it in action - he can't move for attention.