Kristen in the Summer Collection. The whole book is basically Kristen giving Massie a giant Eff You behind her back. It's the anti-Clique Clique novella and proves that Lisi Harrison can write a decent narrative starring decent people, even when she's under pressure on a real time crunch.
My Little Phony: Claire finally stands up to the Pretty Committee! And it only took her until the second-to-last book in the series!