Helen Mirren had already won acting's trifecta -- best actress trophies at America's Academy Awards, Britain's BAFTAs, and the Hollywood Foreign Press Assn.'s Golden Globes. Now, she has become the first actress to win the quadfecta -- adding an Olivier award -- Britain's equivalent of the Tony award -- to her collection, all of them for playing the same character, Queen Elizabeth II. The first three awards recognized her achievement in the movie The Queen. The most recent for her role on stage in The Audience. (Both the movie and the play were written by Peter Morgan.) Mirren's co-star Richard McCabe, who played former Prime Minister Harold Wilson, was named best supporting actor. But the winner of the most Oliviers was the drama The Curious Incident of the Dog in the Night-Time which took seven prizes, including best drama and best actor (Luke Treadaway), tying a record. The award for best new musical went to Top Hat, which celebrates the music, choreography and talent of 1930s' Hollywood.