“GOOD GIRLS”: Gender [sic], Social Class, and Slut Discourse on Campus. “In this article we synthesize insights from social psychology, gender, and culture to argue that undergraduate women use slut stigma to draw boundaries around status groups linked to social class . . . High-status women employ slut discourse to assert class advantage, defining themselves as classy rather than trashy, while low-status women express class resentment—deriding rich, bitchy sluts for their exclusivity.”

I think that the focus on “class” here is too narrow. Women call other women sluts if they don’t like them, regardless of class.