Who is 'Banksy'? Nobody knows. Well, obviously someone does but the general public don't. (Actually he is Robert Banks from Bristol). He is a British grafitti artist who has taken the form to a new level.
This picture, informally, known as 'Banksy's Maid' is a piece of trompe l'oeil ('trick the eye') painted on a London wall and sinced removed or you might prefer the term 'destroyed by the Authorities'.
His stuff is usually humorous and often bitingly political and always very skilled and expertly executed. But he is a bad boy because he uses public spaces - you generally don't see his work hanging in galleries.
He is a people's artist in the truest sense of the word.