Helen Mirren won the Tony Award for Best Actress in a Play on June 7, 2015, for her performance as Queen Elizabeth II in 'The Audience.' This achievement made her one of the few actors to have achieved the US Triple Crown of Acting.

Helen Mirren began her run as Queen Elizabeth II in the world premiere of Peter Morgan's 'The Audience' at the Gielgud Theatre in London's West End on February 15, 2013. This marked another significant portrayal of the British monarch in her career.