Works of art that involve doubles or pairs

Works of art that involve doubling or pairs :
 * Сlaude Сahun, What do you want from me? (1928)
 * Loretta Lux, Sasha and Ruby (2005)
 * Diane Arbus, Identical twins (1967)
 * August Sander, Peasant girls (1927)
 * Jacques-Henri Lartigue, Rowe twins of the Casino de Paris (1929, printed 1972)
 * Jane Evelyn Atwood, Blind twins (1980)
 * Cecil Beaton, Myers Twins (date?)
 * Louise Dahl-Wolfe, Twins at the Beach (1955)
 * Cecil Beaton, The Jungman Twins (1926)
 * Robin Hann, Sleep (date?)
 * Mary Ellen Mark, Twins (2001)
 * Janette Beckman, The Islington Twins (1981)
 * Albrecht Tübke, Twins (date?)
 * Elene Usdin, Take Me (2010)
 * Roger Ballen, Dresie and Casie, Twins, Western Transvaal (1993)

More twin photos here.