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 suffer panic attacks which has made me really conscious about my fitness and I have become addicted to jogging. It might sound odd but a lot of good has come out of it. My fans send letters saying they have taken up jogging because I do it.

It's so important to take vitamins. People always get ill on tour because of the close proximity in the bus with everyone.

I would like to be mates with Richard Branson because I've hung out with him and he is just the loveliest person and obviously a very rich guy and has a lot of stuff going on, but he's actually a really, really sound person, and he's really positive and he's got a really good energy, so I'd like to hang out with him a bit more.

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 never thought that I could make a living out of my voice, to be completely honest. I thought that I could probably keep playing pubs. And it was exciting for me to get even just a pub gig in my town or country, when I went to university.

After shows my face feels dirty with makeup and sweat, especially in the smaller venues, so it feels good to get back to the bus and smooth it away. Sometimes you need something alcohol-based, especially on tour when you don't always get a chance to keep washing your face all the time.