If you asked me to go back to being 14 or 15, I couldn't - it was a terrifying time. I was so awkward in my own skin. I used to hide behind my hair because I was so ridiculously self-conscious.

Growing up, I always wanted to be in punk bands, so I'm really enjoying the harder, heavier element. It's always been my dream to have people moshing at my gig, kind of that really feral element of the music coming out more. I love crowd-surfing.

A lot of the songs on the new album are about imaginary things, things that you can't touch - ghosts and rumors, my dead grandmother, things visiting you in a dream.

Bono told me how to dance in high heels and he also told me about U2's Glastonbury performance and how everything that could have possibly gone wrong went wrong, including him ripping his trousers on stage. I think he was lunging and his trousers ripped! He was telling me how he had to find a new way of performing that didn't involve moving.

Maybe in music you're making an auditory environment and maybe you change your environment around you to suit your own way.

Look, if Givenchy is going to lend you a dress, I'm not going to turn it down. I would wear that dress to just go out and buy a pint of milk if they would lend it to me.

You can forget anything, and actually being a part of a crowd, of a group, can itself be freeing.