During the early era of Olympic gymnastics, many of the top athletes were in their twenties, but, in the decades following the Second World War, the ages dropped. Teen-age stars became the norm. Olga Korbut made a spectacular Olympic début in 1972 with her high-flying performances at seventeen. The Romanian gymnast Nadia Comăneci won the 1976 Olympics at fourteen. Mary Lou Retton was sixteen—still a girl—when she triumphed in ​the 1984 Games. In 1992, all of the all-around Olympic medallists were fifteen years old. They were tiny, hipless and breastless, and they seemed, like birds, to have hollow bones.