Helmut Newton, Richard Avedon, Mario Testino & More in London Photo Sale

World class works including nudes and celebrity portraits by Helmut Newton, Richard Avedon, Irving Penn, Mario Testino, Albert Watson and more are on offer at Christie's Photographs sale in London on May 21. Among the top-priced lots is Albert Watson's greatly enlarged contact sheet of a nude Kate Moss, taken in 1993, estimated at $29,000 - $44,000; his portrait of Uma Thurman meanwhile, also taken in '93, is estimated at $9,000 - $12,000. Mario Testino's iconic 1997 portrait of Princess Di is also expected to do well with an estimate of $26,000 - $32,000. Richard Avedon's portrait of artist Francis Bacon from 1979 is estimated at $18,000 - $26,000. Among the Helmut Newton offerings is 1976's famous Saddle, I (above) and 1980's Tied-up Torso, Ramatuelle, both estimated at $10,000 - $15,000. And Robert Mapplethorpe's nude Sonia Resika, 1988 is estimated at $4,000 - $7,000.