In 1938, kindergarten teacher Helen Hulick wore slacks to court to testify as a witness in Los Angeles, CA. Judge Arthur Guerin was appalled & rescheduled the case, instructing her to “return in a dress.”
The next day, Hulick showed up in slacks again, declaring, “I will stand on my rights…I like slacks. They’re comfortable.”
She was sent to jail. https://web.archive.org/web/20210315143406/https://www.latimes.com/california/story/2019-11-15/from-the-archives-wear-slacks-to-court-and-go-to-jail #HistoryRemix

Helen Louise Hulick Beebe (December 27, 1908 – March 18, 1989) was an American educator and pioneer of auditory-verbal therapy. In 1938, she made headlines when a judge jailed her for wearing trousers while appearing as a witness in court.