British artists Gilbert (L) and George (R) pose in front of a piece entitled "Zig-Zag Kismet" at the Tate Modern gallery in central London February 13, 2007. Their first major retrospective in twenty-five years was launched on Tuesday with over two hundred pictures, including a new commission entitled "The Six Bomb Pictures". The show will tour extensively in Europe and America. REUTERS/Toby Melville (BRITAIN)