Kelly MacDonald refuses to strip off on camera.
The 43-year-old actress - who shared a raunchy scene with Ewan McGregor in her breakthrough movie \'Trainspotting\' - has since changed her stance on nudity and now has a \'bottom double\' for any of her characters\' more revealing moments along with a new clause in her contract.
Speaking to Radio Times, she said: "Generally, if you see a bit of flesh, it\'s not me. I used to not care about getting my photos taken, or any of that nudity thing. You\'d expect that the more you did them, the easier they\'d get. But that\'s not my experience."
Meanwhile, Kelly - whose first big role came when she played Diane in the 1996 classic - recently revealed she doesn\'t need to "work herself up" for emotional scenes anymore as she has been acting for so long.
She explained: "\'Trainspotting\' was a number of years ago so I\'ve got a bit of experience now.
"I don\'t wind myself up for big emotional scenes as I did maybe in my 20s and 30s. It\'s all in there and I am able to trust that now."
The actress will also appear in new BBC and Netflix drama \'Giri/Haji\', and once injured her arm when she was holding a gun during filming.
She said: "It means \'Duty/Shame\' in Japanese. It\'s a Japanese crime story that sort of drips into London and my character is London based.
"I worked with all these incredible Japanese actors it was really exciting.
"I had a very achy right arm one week-end because I spent the previous day holding a gun up the entire day and it really hurt!"
