It's quite funny and really spot on - Handler writes teenagers, and women, very well.
I may be wrong, but I suspect that The Basic Eight (1999) is one of the first YA novels to come in with a twist. Seems like every other book has a twist these days. I just finished Meg Wolitzer's YA novel, and guess what it's got: a twist. Unscientifically, I'd say your top YA novels are going to have either: Vampires, Dystopia, or a wicked Twist. (Idea for YA novel: A dystopian world populated with vampires with a twist at the end. Guaranteed blockbuster.)
Handler breaks up the story in interesting ways, like, he ends chapters as if they're part of a school lesson, with vocabulary lists and questions. But the questions are like, "4. You have undoubtedly seen photographs of Flannery Culp in newspapers and magazines. Is she fat? Be honest." Also there are faux excerpts from TMZ-ish media about Flannery which are quite funny.
Handler can write a wicked sex scene (see Watch your Mouth) and he also manages to write about sex with teenagers that is neither creepy nor milquetoast, somehow (see Why We Broke Up).
Somehow Adam and I were talking about something: theater, I think. The line between audience and actor. I felt something warm on my neck, thrilling me. I kept talking about whether Halloween was a form of theater, if parties were a form of theater, if Adam kissing me meant I should get up and leave but it felt so nice, kissing me over and over on the same spot on my neck. It burned delicious like being branded, but as he ran his hand down my dress it turned out I wasn't such a cow at all. That's what turned me on, as much as him kissing me: feeling my own body, thin and gorgeous against him like a celebrity. Thin, even.