Keira Knightley may have survived pirates, bounty hunters and bombs in the movies but she's admitted the most terrifying thing she has ever done on screen is singing live.
The screen beauty plays a bar singer in wartime London in new movie Edge Of Love, and in one scene she has to sing to a room of 100 extras. However, the Atonement actress was shocked when she discovered she had to sing live after presuming she would be doing it in playback.
She told Scottish chat show host Lorraine Kelly, "It's all about fake, and all of a sudden it was real. It was the most terrifying thing I have done in my entire life. My knees actually nearly buckled, I was so nervous."
The actress had better hope she gets over her nerves however, after previously reporting she's in talks to play Eliza Doolittle in a new big screen update of the much loved musical My Fair Lady.