Nicole Kidman: I don't mind being naked on screen

Having bared all twice in Fur and alongside ex husband Tom Cruise in Eyes Wide Shut, Nicole, 44, admits she is OK with stripping off for a scene.

In the new issue of W magazine, she says: Maybe as I get older, and now having had a baby, it might be different, but I enjoy not letting my issues get in the way of a performance.

Once I start putting all my little insecurities in my mind, Im not actually acting.

"Then its about me - and it should never be about me. It should be about the character."

Nicole, who is now married to singer Keith Urban, appears in the magazine in a glamorous Old Hollywood-inspired shoot with her Hemingway & Gellhorn co-star, Clive Owen.

The new film is very sexually charged as it follows the relationship between Ernest Hemingway (Clive) and journalist Martha Gellhorn (Nicole), who was his mistress then wife.

Happily married ... Nicole Kidman and Keith Urban

The HBO flick follows the couple who spent two years reporting from war-torn countries.

Nicole revealed: The sex was very important in that relationship because thats the way she cuts Hemingway off."

Still, she admits the scenes were intense and it made her question the director.

She said: I kept asking Phil Kaufman, the director: Is all this sex important for the story?

I wanted to make sure he wasnt just getting off. But these were two people who could make love when a building was falling down around them. They had passion.