This is by far one the worst books I've ever read, it was a waste of about four hours of my life. The characterization is decent, but with the differences between them, it's hard to believe that they are friends in the first place. Also, the idea of the bulimic girl who is best friends and best enemies with this spoiled b*tch is just ludicrous. If I were you, and I had a second chance, I would avoid this book at all costs. Read The Sisterhood of the Traveling Pants instead.