There is a LOT of body shaming in this book. It struck me right away; the MC, Lexi, constantly puts down people for being too fat or too thin, for what they eat or don't eat, and loads the reader down with all the stereotypes about body, weight, ugliness, beauty, food, and "health." But I pushed through, figuring, since it's so in your face, that it's probably part of the character's development. It's not. Lexi's "revenge" is discovering that she's actually a hot girl (rather than "average"), once she puts on a revealing dress and some mascara. Great personality? Maybe not so much. The inner beauty message that this book was going for is lathered on thick at the end, probably because the content of the book doesn't actually support it. Also, Lexi's parent's are both abusive and neglectful and nothing really comes of that.
I DO like that she doesn't have a boyfriend at the end of the book. So there's that.