Dakota Johnson has revealed that she burst into tears when she was offered the role of Anastasia Steele in Fifty Shades of Grey.

The actress told Entertainment Weekly: "They said, 'You got the offer' and I couldn't speak."

Johnson continued: "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. And there's this giant Doberman Pinscher laying on the bed next to me and he just slowly fell asleep.

"It was so special and [this dog] didn't give a **** about me and what I was going through."

The 24-year-old will star opposite The Fall's Jamie Dornan in the adaptation of EL James' novel.