The 30-year-old classical singer revealed that she loves a good night on the town and often gets so drunk that she accidentally exposes herself.
She told the Daily Star,'I love getting a bit crazy on a night out.
'I'm a very happy drunk and I literally love the world when I've had a few.
'I always manage to get so sloshed I fall over and flash my knickers to everyone!
'It's just a shame that I'm normally wearing highly unsexy granny panties when I give them an eyeful.'
And after starring in British drama Dr Who on Christmas day, the Welsh star said that she would like to spread her wings into acting.
'I never thought I'd like acting but having tried it I'd love to do more,' she said.
'A musical film would be great, but my ultimate role would be a Bond girl. I wouldn't want to be a nice one, though.
'I enjoy being bad so I'd have to be one who turns wicked halfway through.'