At the beginning of the 20th century professional boxers were allowed to strip to the waist but women spectators were excluded from watching. When the 1908 World Heavyweight Title was fought at Sydney Stadium, the wife of novelist Jack London, Charmian Kittredge, disguised herself in men’s clothing and snuck in.
image of Charmian found here
From Jack London’s wikipedia page:
Finding that the prim and genteel lady was lustful and sexually vigorous in private was like discovering a secret treasure;” and according to Kershaw —”At last, here was a woman who adored fornication, expected Jack to make her climax, and to do so frequently.
image of Jack and Charmian found here
Jack Johnson knew the effect he had on women and exploited it fully. There were rumours that he padded his tights and he created a scandal by inviting female admirers to visit him in his room at Watson’s Bay Hotel. According to folklore they formed an orderly queue.
There is no evidence Charmian was part of that queue. After Jack London’s death, however, she continued her lustful ways with several other lucky men, including Harry Houdini whom she called her “Magic Man”.
image of Houdini and Jack Dempsey found here