You've been brunette for a while now. Will you go back to blond anytime soon?
"For the last 10 years, the only reason I've changed my hair color is for work. I'm constantly changing and transforming for different roles, and that's part of the fun of being an actress. I also think hair color is a fun thing to play with. Hair grows back, and it's fun and can transform you. Plus, if you dye it correctly with a good product, you won't destroy it. I've had fun dying my hair since I was 12, so it's something that I enjoy. And it's so funny when I look at some of my different Revlon ads, and I'm like, 'Oh, brunette! Then blond, then brunette.' But [fellow Revlon ambassador] Emma [Stone]'s like that too -- we both love to change it up."