A musical film is my idea of heaven. You can pre-record, you don't have to sing live. Singing live was the bit I hated the most. I never felt like a confident singer.

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

In the next few years I'd love to play a female version of Doctor Who. I know exactly how I would play her - she would be crafty in a clever kind of way.

No one had much faith in me because I was so young. They imagined a little brat with a flash-in-the-pan single. It was inevitable... Thankfully, I proved people wrong.

I am thinking about those things now. More so than all my friends - they're a lot older than me, but they're not even thinking about babies.

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.

I love fresh flowers for my home. I spend far too much money on them, buying them almost every day.