The 24-year-old actress, who had a small role in 'The Social Network', could not believe that she had been offered such a coveted role in the most awaited movie adaptation of E L James' erotic novel, reported Contactmusic.
"They (management) said 'You got the offer' and I couldn't speak. I was just so relieved. I was crying and crying.
Water was literally squirting out of my eyes because I had been so stressed out," she said.
Universal and Focus Features' adaptation, is directed by Sam Taylor-Johnson.
Recently it was announced that the release date of the movie has been pushed to February 13, 2015 to coincide with the Valentine's Day weekend.