In an interview, Anne Hathaway said, "I was more nervous about the accent than nudity. I mean, you can do sit-ups as prep for the nudity. But there aren't a lot of vocal sit-ups that you can do. Maybe it's because I have more experience in my life being naked than pretending to be British. So I got more comfortable quickly with the nudity than I did with the accent."
However, Anne Hathaway, who was born in New York and raised in New Jersey, worked hard at mastering the accent. She stayed in the accent and used British-isms. But she was a little disappointed because she hoped to start dreaming in the accent, which could never happened.