Roberts refuses to go nude in movies

Julia Roberts has vowed to never take her clothes off in another movie because she thinks it ruins the performance.

The actress, whose breakthrough role was as a prostitute in Pretty Woman, told OK! magazine: "I wouldn't do nudity in a film. To act with my clothes on is a performance. To act with my clothes off is a documentary."

Recently the mother-of-three had to be convinced into wearing a bikini in new movie Charlie Wilson's War and she admitted that she does not feel confident about her body anymore.

She said: "I'm too tall to be a girl. I wouldn't call myself a woman. I'd say I'm somewhere between a chick and a broad."