Bullock 'worried about messing up role'

WENN

Sandra Bullock has admitted that she was hesitant to sign on for new film The Blind Side because she was unsure if she could master the role.

The movie - based on the novel by Michael Lewis - revolves around a wealthy woman (Bullock) who takes in a homeless teenager who goes on to play college football.

Speaking to Extra, Bullock said: "I don't even remember saying yes [to the movie]. I kept turning it down.

"Not because I didn't like it, but because I didn't know how to do it. I didn't know how to make it the story that it deserves to be. I couldn't bring to the role what it needed."

She added: "These are the kinds of roles that actresses can mess up, and that's one of the reasons I didn't want to step into it! I didn't know how to make it as good as the story.

"I'm glad I did [it]. It's still a scary thought for me. I don't know how I did it, but I had a lot of time to prepare for it."

The Blind Side is released in the US this week.