In March 2006, Rigg joined fellow actors Judi Dench and Vanessa Redgrave in writng a letter to The Times newspaper. The letter requested that the London Victoria And Albert Theatre Museum remain open. The museum, which houses a collection of stage costumes such as Olivier's outfit from his Richard The Third performance, is threatened with closure because it has not raised £12 million for necessary redevelopment. The letter read:We are horrified that this important and world-renowned museum could be closed and its collection broken up... We fear this means that most of the exhibits would no longer be available to the public.
Diana: When I'm sixty-six, I hope I'm alive, I'm in one piece, that I am independent, physically and financially, that I've learned a great deal more than I have up until this stage and that I'm a raver of a sixty-seven-year-old. You know, fun to be with and joyous, and laughing a great deal. And, hopefully, a couple of lovers.
Diana: (Upon being voted 75th sexiest woman in the world by Playboy) I was thrilled, but of course it's terribly unfair! But for someone who's never consciously or actively promoted her sexuality, I think it's a hoot. Of course, they could look at me now and go, 'What?'