Helen Mirren is one of the finest British actresses.
She has had a long and distinguished career (her filmography is huge!). She is also well know for appearing in movies where she has to (at least partially) undress for her art. I think this is more related to her attraction for "edgier" projects rather than a sub-conscious need to flash.
She has had a marvellous few years lately, with her Oscar and the many other awards she has received for The Queen, Elizabeth and Prime Suspect. She also beat out J-Lo in a marvelous body competition.
