Jul 26, 2008, 9:00 GMT
Maggie Gyllenhaal was "professionally worried" about starring in the new Batman movie.
07/21/2008 - Maggie Gyllenhaal - "The Dark Knight" London Premiere - Arrivals - Odeon, Leicester Square - London, England © Solarpix / PR Photos
The actress - who plays Bruce Wayne's love interest Rachel Dawes in 'The Dark Knight' - was concerned about starring in such a high-budget blockbuster movie.
Maggie - who took over the role from Katie Holmes - said: "I was worried. Professionally and also because I had a three-month-old daughter. The paparazzi were boundary-less, in fact they were awful. I wondered if I really wanted to be in a movie with all that attention.
"Then someone pointed out that I can't hide. If I'm an actress and here's a project with an incredible director and actors, I have to do it."
Maggie, 30, also deliberately tried not to copy Katie's interpretation of Rachel from the previous movie 'Batman Begins'.
She added: "I think Katie is a fine actor, but I don't think it would have served anyone if I were trying to imitate her. I saw Rachel as a new woman in this movie."
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