LONDON, ENGLAND – FEBRUARY 08: Sue Tilley, whom Lucian Freud painted in ‘Benefits Supervisor Sleeping’ (L) poses for photographs in the ‘Lucian Freud Portraits’ exhibition at the National Portrait Gallery on February 8, 2012 in London, England. The exhibition, which officially open to the general public on February 9, 2012, features 130 artworks spanning the length of Freud’s painting career from the early 1940s until his final, unfinished work. (Photo by Oli Scarff/Getty Images)