Cooper is none too nappy
Dominic Cooper - currently in film Mamma Mia! - co-stars with Keira in The Duchess as her lover. He reveals that one sex scene struck him as unfair.
"She got to keep her clothes on as she sat on top of me, and I appear to be totally naked beneath her.
"In fact I had to wear a skin-coloured cellophane nappy to conceal my inner sanctum. Keira couldn't stop laughing."