I'd like a male to listen to my music and find it kind of fascinating, what a girl goes through when they get heartbroken or get sad or get hurt by something.

'I Know You Care' is about my dad. And I haven't seen him for a long, long time. And my parents divorced when I was really young. And I guess I just wanted a - it was my way of saying that I wasn't bitter or angry anymore. I was just sad and just felt like something was missing.

I instinctively dress a bit tougher because I've spent a lot of time in the U.S. and I realised there was a certain image projected of me here. I've always been an absolute rebel. When I was in my teen years I had piercings and wore all black.

I met Prince William at a musical festival and he let me know he was a fan of my music. But the invitation to sing at his wedding reception came completely out of the blue. The fact that Kate and William knew the words to my songs was very touching.

I'd like to look like Madonna when I'm her age. I also look at athletes and love their bodies. I've always wanted to be muscly, not skinny. A lot of women yo-yo around, but I'm always aware if I'm getting a bit out of shape. I never look at the scales but I can just tell. It goes on my tum and bum.

I never expected to get the Tom Jones treatment and it amazes me that I do. Strangely it's women who throw their underwear at me when I'm performing live. My male fans tend to be quite shy. My female fans are wild. I never know what to do with all the lingerie that lands at my feet. Maybe I should open a shop.

Christmas in L.A. is weird. There's no snow. It's not even cold.