I'd like to do a completely off-the-wall collaboration. I would like one of my songs to be the hook to a rap song. That would be so much fun!

When I'm 40 and nobody wants to see me in a sparkly dress anymore, I'll be, like: 'Cool, I'll just go in the studio and write songs for kids.'

If they don't like you for being yourself, be yourself even more.

Hearing a crowd scream is the coolest sound in the world. It can motivate me to do anything.

I can't deal with someone wanting to take a relationship backward or needing space or cheating on you.

Listening to my songs is like reading my diary.

I've got my Grammys on top of my piano and I look at them when I play.