Strictly invitation only was the British gala screening of Madonna's new documentary "I'm Going To Tell You A Secret" on Tuesday (November 29) in one of London's smaller cinemas on the famous King's Road. Madonna, who's had incredible success with her latest single "Hung Up" - Number One for the third week running in the British charts - attended the screening with her husband, British film director Guy Ritchie. Friends Gwyneth Paltrow and Stella McCartney were also there to lend support. In chronicling Madonna's life while on the 2004 Re-Invention Tour, "I'm Going To Tell You a Secret" follows in the footsteps of the 1991 documentary, "Truth of Dare" as it was known in the United States and re-titled, "In Bed With Madonna" for the European market, that had profiled the diva's Blonde Ambition Tour. The documentary explores her spiritual growth as well as her relationship with her dancers. In one scene, she asks her dancers about smoking cannabis. The Queen of Pop revealed that her latest ambition would be to try her hand at directing a movie herself, a feat husband Guy Ritchie jokingly frowned upon. "I could do without the competition," he said. For Madonna, the experience of producing this documentary proved an inspiration to try her hand at her husband's job. "Yeah, this has been a great learning experience and Jason kept me involved in a lot of the decision making so I like it yeah!," she said. "I'm Going To Tell You A Secret" director Jonas Akerlund said he thought Madonna could certainly pull it off: "I think she would. I mean she's made more movies than I have and she's been around for a while and she's very creative and that's what it's about. I'm not sure she has the patience for it because it's a very dragged out process, there's a lot going on when we make films that she doesn't know about but if she puts her head to it she can do anything, we know that. We know that!," he said. The documentary is due to air in the UK on Thursday (November 1).