It's not about being thin, it's about being healthy. And when you are a child you like to eat all these unhealthy things like chocolate and sweets. Oh my God. I love strawberries dipped in chocolate and Lion bars and Toffee Crisps - and as you grow up, you have to learn that those things are only good in moderation or you will become very fat.
Twitter's a funny one. I mean, it's good in some respects, but I can't stand it in other respects. You know there are too many opinions, people get opinions mixed up, and people get being rude mixed up with 'that's my opinion.'
If I'm naughty, I'm grounded for two weeks or Mum takes my phone and my laptop because she knows I can't live without them. Sometimes I'll say, 'Mum, do you just want to take my laptop?' because I can still use the Internet on my phone. But now she's going to read this and see what I've been doing.
At one of my old schools, I didn't tell anyone I was doing my first album because I was worried they'd be like, 'Who does she think she is?' So I just let them find out for themselves.
Everyone told me I could sing from about the age of ten. My mum was always telling me. But I was so shy, I didn't believe them. And the more that people told me, the more I went into the background and the less likely I was to sing.
I wouldn't say my mother was my best friend, because that sounds odd, but we have a really tight bond and she is my friend on Facebook. Although she only goes on it to check up on me and sometimes we argue about it.
I write a lot about other people, like family and friends. I look at their lives and relationships and think, 'Well, if I was in your position, this is how I would see it.'