You need someone who is going to help you make that better version of yourself.

I was really, really, really nervous when I got this role because I did feel it was important to make Alice [Cullen] just as lovable as I read her being on paper and, kind of, full of vitality. In my head she is just this light and breath of fresh air in very dramatic settings - because I feel like we're always extremely dramatic in this film. I wanted people to be able to relate to her.

[Mackenzie Foy] is really a fantastic actress and she's very professional, but she is still a kid and that's really nice to see, whenever there is a balance and they're able to have fun and play on set, but still go home and hang out with friends her age. I was really impressed with her. I think the biggest change for us is that we had a "swear jar." And she was rich - she made more money than us.

You can't control the paparazzi. But if you go to Coachella you're going to get photographed. Whereas if you're at home, walking down the street you probably won't. It's something I've learnt to navigate my way around but I try to keep my private life private.

You do a movie and, even if it's not a comedy or it's not an action film, you get a little taste of it, and then I want to do it full force.

Throughout the course [of Twilight], you get to see a little more of her vampiric side, because I think she's this vampire with a heart of gold and so that was kind of fun - to show her be a little tough and a little fierce, and to show that she has a little bit of a sassy side when she's dealing with the wolves or with Jacob. So I feel like I got to really round [Alice Cullen] out quite nicely.

The past is the past. As long as it's not a mass-murderer past! You're with the person who you're with as they are now.