You know who the flappers are: Wikipedia:
Flapper in the 1920s was a term applied to a "new breed" of young Western women who wore short skirts, bobbed their hair, listened to jazz, and flaunted their disdain for what was then considered acceptable behavior. Flappers were seen as brash for wearing excessive makeup, drinking, treating sex in a casual manner, smoking, driving automobiles and otherwise flouting social and sexual norms.
Flappers had their origins in the period of Liberalism, social and political turbulence and increased transatlantic cultural exchange that followed the end of World War I, as well as the export of American jazz culture to Europe.
There is more description at the Wikipedia article and it seems to me I would be a candidate to be a flapper with some restrictions. What about you?
The right cover with women holding headlines telling the way women are abused is amazing, unfortunately still true.