po-seur (noun): a person who pretends to be what he or she is not. Charlotte Beverwil, Janie Farrish, Melissa Moon, and Petra Greene attend exclusive Winston Prep in the Hollywood Hills. And that's all they have in common. But hang out together? They'd rather be hanged. Borrow one another's clothes? They'd sooner borrow a zit. So when these four sophomores are forced into a class to create their own fashion label, they Clash with a capital C. Janie...