Jennifer Aniston is to swap acting for directing, for a new charity project.

The former 'Friends' star will step behind the camera to work on a short film with director friend Andrea Buchanan.

'Room 101' will feature 'Convoy' star Kris Kristofferson and is being made for Glamour magazine's Reel Moments charity campaign.

The film is one of three stories picked by Glamour bosses based on real-life dramas sent in by readers of the women's magazine.

Aniston admits she is "thrilled" to be involved with the project, saying: "I'm really excited about this."

In the film, Kristofferson plays a patient brought into a hospital emergency room who quizzes a nurse, played by Robin Wright Penn, about the wrong choices she has made in her life.

Aniston has made no secret of her desire to direct.

The actress, who is dating her 'Break-Up' co-star Vince Vaughn, recently revealed she had enrolled on a film directing course to try and fulfil her ambition.

She said at the time: "I plan to direct. In fact, I'm taking a course now. You have to be multi-skilled in this job."