I think that one of the themes that comes out in the book is what evil can look like. The fashion element emerges quite prominently in this exploration. How some of the most beautifully clad people can do some of the most horrible of things is a part of this. Miranda is one of the most well dressed, impeccably groomed individuals, an embodiment of class. Yet, her treatment of others, in particular Andrea, helps to bring out how cruelty and evil is not something that looks disarmingly awful. Rather, it exists in what we might place a great deal of value upon and to which weight is added. At the same time, I think that another theme is the notion of understanding one's identity. The fact that Andrea no longer wants to emulate Miranda is a part of this and a theme that makes the novel representative of character exploration as well as redemptive.