Anne Hathaway has revealed that she spent most of her time in the gym as she prepared to play Catwoman in The Dark Knight Rises.
The actress is one of the new faces on the cast list of Christopher Nolan's third Batman movie and Hathaway said that she had to 'physically transform' for the role.
Hathaway also admitted that Nolan wanted her to be able to do her own stunts in the movie.
Speaking to Entertainment Weekly the actress said: "I had to physically transform.
"Chris sat me down at the beginning and said, 'Joseph Gordon-Levitt did all of his own fighting in Inception. That one zero-gravity fight? He trained for two months.'"
"I basically left his office and went to the gym and just came out about five minutes ago."
It is the first time that Catwoman has been seen in the Batman franchise since Michelle Pfeiffer took on the role back in 1992.
This is the first superhero movie that Hathaway has been a part of and The Dark Knight Rises promises to be one of the biggest movies of 2012.
The actress is currently filming Les Miserables, the new movie by Tom Hooper, in which she is set to play Fantine.
The Dark Knight Rises is released 20th July.
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