A showbiz icon whose wet t-shirt inspired the lifelong devotion of a generation of male fans was agelessly luminous when she surfaced this week at the age of 81. She began her Hollywood career in the 1960s and acted in films with such immortal names as Audrey Hepburn, Steve McQueen and Frank Sinatra. By the 1970s, she had become a reigning sex symbol thanks to an adventure picture that saw her go bra-less while swimming in a white top. Although she was often slotted in America as a pinup, she achieved a higher-brow career in France, working with venerated legends of the Paris film industry including Isabelle Huppert, Jean-Paul Belmondo and…