Rooney Mara is worried becoming a celebrity could be harmful to her abilities as an actress.

The 26-year-old actress is set to become a household name playing lead character Lisbeth Salander in 'The Girl With the Dragon Tattoo' opposite Daniel Craig and is worried commercial success will divert attention from her career.

She said: "I want to be an actress, I didn't want to become an actress to become a celebrity at all. I think that actually hurts your ability to be a good actor, the more people know who you are the less able they are to see you as a character."

Rooney is also worried that celebrity culture is "out of control" but is hopeful she won't let it damage her too much.

She added to Britain's OK! magazine: "Being a celebrity is certainly not something I ever wanted for myself, but it's obviously a reality of the business I chose to be in. It's a very bizarre part of our culture that's sort of grown out of control and hopefully won't affect me that much."