The actress, who was recently voted 2014's Most Desirable Woman in an online poll, recalls fighting for a role in a London play as a child.
She says, "I was learning a folk song in school about a donkey, so I decided to sing that. They said, 'Do you know anything more current?' I then gave them my best rendition of the Spice Girls, complete with dance moves.
"That's where my musical career ended. It made me realise that I wasn't quite ready. I think my parents were trying to give me a healthy dose of realism early on."