Annette KellermanåÊprofessional swimmer, vaudeville and film star, and writer. She was one of the first women to wear a one-piece bathing costume, instead of the then-accepted pantaloons, and inspired others to follow her example.

She is often credited for inventing the sport of synchronised swimming after her 1907 performance of the first water ballet in a glass tank at the New York Hippodrome.

Kellerman was famous for advocating the right of women to wear a one-piece bathing suit, which was controversial at the time. According to an Australian magazine, "In the early 1900s, women were expected to wear cumbersome dress and pantaloon combinations when swimming. In 1907, at the height of her popularity, Kellerman was arrested on Revere Beach, Massachusetts, for indecency - she was wearing one of her fitted one-piece costumes."

Via Wikipedia.

Read more at the Sport Australia Hall of Fame.