A bluestocking is an educated, intellectual woman. Until the late 18th century, the term had referred to learned people of both sexes. However it subsequently was applied primarily to intellectual women, and the French equivalent bas bleu had a similar connotation. The term later developed negative implications, and in some instances such women were stereotyped as being “frumpy”. The reference to blue stockings may arise from the time when woollen worsted stockings were informal dress, in contrast to formal, fashionable black silk stockings.

Flappers were a “new breed” of young Western women in the 1920s 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.

(from wikipedia)