1907 Sydney bathing costume protests
The 1907 Sydney bathing costume protests were a response to a proposed ordinance by the Waverley Shire Council to require the wearing of a skirt-like tunic by male bathers. On the morning of Sunday 20 October, thousands of surf bathing enthusiasts poured onto the sands of Bondi, Manly, and Coogee beaches in various types of feminine dress enacting a humorous mockery of the proposed regulations.
Source: Wikipedia — 1907 Sydney bathing costume protests (CC BY-SA 4.0)