I have always loved kids. They are little adults with so much personality, and it is fun to work with that. Whether that means donating school supplies or medication, or [using my celebrity] to get them a bone marrow transplant, I want to help.

People think, because we're young, we aren't complex, but that's not true. We deal with life and love and broken hearts in the same way a woman a few years older might.

They're gonna keep knocking away until all this comes crashing down. But I'm not gonna ever crash. I'm in control.

I'm crazy and I don't pretend to be anything else.

In the first two years of my career, there were a lot of restraints on what I could do. I couldn't wear certain colors of lipstick, like bright pink, dark pink or red; [my lips] had to be natural. Eventually, I stopped communicating with certain people at the label, and did exactly what I wanted to do. And that was to cut my hair, dye it black, change my clothes, change my sound. Really to just express myself.

Man down is a song about a girl who has committed a murder that she regrets and is completely remorseful about.

My new one (tattoo) says 'Never a failure, always a lesson' and is kind of my mantra to life, just a reminder. My life is just a crazy rollercoaster every day and whenever I read that it just reassures me.