The actress described the strict weight-loss regimen she is undergoing for Les Misérables, and also discussed the physical demands of her role in The Dark Knight Rises.
"I'm doing some crazy weight stuff right now," she said in a recent interview with Allure magazine.
"I'm on day six of detox... this diet makes me break out, so I love that. Nothing like living on hummus and radishes and then being all like, 'And I got a pimple'."
She went on to describe the pressure she felt while filming her role in The Dark Knight Rises, because of the skin-tight suit her character Catwoman wears.
"It was a psychological terrorist," Hathaway said of the costume. "The suit, thoughts of my suit, changing my life so I would fit into that suit...
"It dominated my year. I went into the gym for ten months and didn't come out."
The Dark Knight Rises is released on July 20. Les Misérables will be released in the US on December 24, and in the UK on January 11, 2013.
> 'Les Mis': Hugh Jackman, Anne Hathaway, Russell Crowe in new pictures
> Anne Hathaway rep denies 'Les Misérables' crash diet
Watch a trailer for The Dark Knight Rises below: