Charli XCX wants to create a musical ''empire''.

The 'Boom Clap' hitmaker loves writing her own music and also penning tracks for other artists and wants to extend her reach as far as possible.

She said: ''I'm going to build an empire. I'm always writing for someone else. I want to be someone who has her fingerprints all over the pop charts.''

The 22-year-old star insisted that, while she doesn't make punk music, she considers her ethos to be punk and incorporates elements of the style into her sound.

She told the new issue of Seventeen magazine: ''I don't make punk music - I make pop that's inspired by elements of punk.

''For me, as a person, am I punk? In the sense that I do what I want and I enjoy going against the norm, I suppose I am.''

And Charli insists she isn't worried about coming across as cool but would rather be ''nice and fun''.

She added: ''When you're growing up I think there's this idea that the coolest people are the ones who are really rude and feverish. But I've come to realise that isn't cool.

''I think the best people are the ones who are just nice and fun. This is really cheesy, but you only have one life - why spend most of it pretending to be cool?''