Individuality
The title of this novel refers to a self-contained group of female college students known collectively as "the Bunnies." They are a privileged, upper class, and exceedingly white group of mean girls who have lost any sense of individuality. The protagonist of the story finds them detestable. At the same time, she finds them irresistible. She can't stand their existence in theory, but once she is invited to become a member in practice, everything changes. The story explores how easily one is willing to individualism in exchange for the comfort of belonging.
Identity
Related to the theme of individualism versus groupthink is the issue of identity. The concept of what constitutes a person's identity is explored throughout the narrative in a number of different ways. The most obvious is the way in which the protagonist's self-identity is impacted during her transition into becoming one of the "the Bunnies." Before becoming a Bunny, she has developed a close friendship with Ava. The actual identity of Ava becomes a topic of ambiguity and perceptual complexity after the protagonist becomes a Bunny. In addition, there are characters known Drafts who raise not just questions about identity, but existence.
Feminism
The Bunnies are an odd group. They present themselves almost as Stepford wives in their hyperbolically girly-girl sweetness and light. The reality is that behind closed doors, they are extremely dark. It is eventually revealed that the Bunnies are engaged in particularly extreme sorts of feminist attacks against the patriarchy. At the same time, however, it is also revealed that this feminism is steeped in the very same traditions of privilege and exclusion as the patriarchy it is rebelling against.
