Roy Lichtenstein’s 1963 Woman with Flowered Hat has recently been sold by Christie’s for $56,123,750, a world auction record for Lichtenstein. (I got the picture on the left from here.) Christie’s May 2013 Post-War and Contemporary Art Evening Sale achieved $495 million, the highest total in auction history. This painting was Lot 34 of Sale 2785, and was estimated to sell for around $30 million.
From the Lot Notes:
He had taken images and objects from popular culture and smuggled them into the realms of High Art. With the present work he began to reverse the process by converting the hallowed canon of art into “five-and-dime-store” pictures.
According to this blog (from which I got an image which I edited to get the picture on the right), Lichtenstein based his painting on Pablo Picasso’s 1939-1940 Femme au chapeau fleuri.