Visitors (L and R) view a sculpture entitled ‘Self-Portrait and Model’ by the late U.S. artist Duane Hanson is exhibited at the Serpentine Sackler Gallery in London, June 1, 2015. Hanson’s lifelike sculptures portraying working-class Americans and overlooked members of society are being brought together in the largest show of his work in Britain since 1997. REUTERS/Toby Melville