I went from being totally unknown and never acting professionally to being in a major movie and being very famous. It all happened so quickly, I didn't have any time to work things out. It's been pretty scary at times.

As an actress I take roles I find interesting.

I was working on 'Harry Potter' while I was growing up, and the attention it brought me made me feel quite isolated.

How can we effect change in the world when only half of it is invited or feel welcome to participate in the conversation?

The difficulty for me is that I'm interested in so many different things. I could never really imagine myself doing one thing, and I'm pretty sure that I'll end up doing four or five different things.

The character is everything that I felt really strongly against - she's superficial, materialistic, vain, amoral. She's all of these things, and I realised that I really hated her. How do you play someone that you hate? But I found it really interesting and it gave me a whole new insight into what my job, or my role as an actress, could be.

It's difficult on my dating life, because anyone I get photographed with is automatically my boyfriend. So it just makes it look as if I've had, like, 6,000 boyfriends!