The Bachelor Girl (French: La Garçonne[a]) is a novel by Victor Margueritte first published in 1922.
Amongst other things, this included having multiple sexual partners, both male and female.
The title addresses the somewhat ambiguous realm between definite gender roles, e.g. where a Judeo-Christian patriarchal society might place a free-thinking, free-living woman in its social strata.
Although the theme is not particularly shocking in the present day, at the time it was considered quite scandalous; it even caused the author to lose his Legion of Honour.
This article about a novel of the 1920s with a lesbian, gay, bisexual, transgender, or queer theme is a stub.