Rebel Wilson would appear naked for the right film role.

Of 'The Brothers Grimsby' scene, she recalled: "They wanted full-frontal nudity. We write in the contract, specifically, 'No nudity.'

"They got in another girl - this larger burlesque dancer from South Africa - to be a nude double. And they got her to do all this stuff. Sacha would go, 'See, she looks good.' I'm like, 'I'm not doing it. I don't care what you say.'"

However, Rebel suggested she would be willing to star nude in a scene for a more serious movie.

She told Marie Claire magazine: "You want to know that the people [behind the camera] have a certain sensibility and decency. And a lot of times in comedy they're not those people."

Despite this assertion, Rebel revealed she was markedly less self-confident as a child than she is now, admitting her mother insisted she took acting classes as a means of overcoming the problem.

She shared: "I was so unusually shy, bordering on a social disorder. So my mum - one day she drives me to this community acting class. I was holding on to the car door and crying. She had to peel me off the car. She's like, 'I'll pick you up in two hours,' And she left me."

Earlier this week, meanwhile, it was announced that Rebel is to make her West End debut in 'Guys And Dolls'.

She is joining the cast of the London production for an eight-week stint as Miss Adelaide over the summer, and revealed she feels "honoured" to have been offered the role.