Massie Block forms a new clique, but old rivalries, new relationships, and petty jealousies threaten to destroy Massie and her friends.

Massie, hurt that friends have caught the eyes of boys she was interested in, hires actresses to pretend to be her new friends while Claire, who feels somehow responsible, makes a dramatic move to set things right.

Mean Girls meets Middle School in The Clique... The only thing harder than getting in, is staying in. Enter Claire Lyons, the new girl from Florida in Keds and two-year-old Gap overalls, who is clearly not Clique material. Unfortunately for her, while they look for a new home, Claire's family is staying in the guesthouse of the one and only Massie Block -- Queen Bee of Octavian Country Day School. Claire's future looks worse than a bad Prada knockoff. But with a little luck and a lot of scheming, Claire might just come up smelling like Chanel No. 19. Meet the rest of the Clique: Massie Block - With her glossy brunette bob and laser-whitened smile, Massie is the uncontested ruler of The Clique and the rest of the social scene at Octavian Country Day School, an exclusive private girls' school in Westchester County, New York. Massie knows you'd give anything to be just like her. Dylan Marvil - Massie's second in command who divides her time between sucking up to Massie and sucking down Atkins Diet shakes. Alicia Rivera - As sneaky as she is beautiful, Alicia floats easily under adult radar because she seems so "sweet." Would love to take Massie's throne one day. Just might. Kristen Gregory - She's smart, hardworking, and will insult you to tears faster than you can say "my haircut isn't ugly!"

Weeks before Christmas. Alicia and Olivia are on their way to Manhattan so the Teen People editors can do a story on them about winning the Octavian Country Day uniform design contest. When Massie finally processes that the girls who hijacked her victory are also modeling for Teen People, she is livid. It should have been her. 'Ehmagod, what will everyone think when they find out it wasn't me who was asked to model? I will be SO over.' Massie decides it's time to get revenge. This snake can not lay idle in the weeds for one more second. Kristen and Dylan throw out terrible 'revenge' suggestions and Massie vetoes them all. She will think of something! But first she has to go home and exfoliate. The social minefields of Westchester County's most privileged middle school girls drive the page-turning action of this addictive series, set in New York City's most elite suburban county. The Clique . . . the only thing harder than getting in is staying in.

A tragic haircut leaves Kristen looking manlier than a New York Jets linebacker. Will she be condemned to a season of trying to find cute hats when, as everyone knows, hats are so over? Meanwhile, Claire got everything she wants -- new camo Converse high-tops, bag and bags of gummies, and best of all, her first ever cell phone, from Massie. Although Claire's now an official member of the Clique, presents don't matter to her -- all she really wants is her first kiss from Cam, of course!

Massie gets BE-yoo-tiful: After Massie Block gets kicked off her high horse and out of her ultra exclusive Westchester riding camp, her parents force her to do the unthinkable-find a summer job. Not one for dog-walking or brat-sitting, Massie comes up with the ah-bvious solution: She'll be a sales rep for the cosmetics brand Be Pretty. Massie fully hearts her new role as fairy gawdmother of makeup-until she discovers transforming LBRs into glam-girls takes more than a swish of her royal purple mascara wand.

Massie Block: The Briarwood boys have invaded OCD and are taking over everything. Worse, the soccer boys have become so popular that the Pretty Committee's alpha status is in serious jeopardy. So Massie lays out a New Year-New Pretty Committee rule: Anyone caught crushing on a boy will be thrown out of the NPC-forever. But will she be able to follow her own decree when she sees that Derrington has ditched his shorts-obsession in favor of ah-dorable jeans? Alicia Rivera: Is the opposite of onboard with the boyfast. Her crush, the Ralph Lauren-luh-ving Josh Hotz, is more irresistible than crème brûlée fro-yo. But is he worth losing her spot in the NPC? And taking on the wrath of Massie? Dylan Marvil: Is so ready for the boyfast. She's straightened her unruly red hair and permanently pressed boys out of her life. If only she could do the same with curly fries and caramel popcorn. Kristen Gregory: Has traded her sporty-chic Pumas for Billabong board shorts and a shark tooth necklace. She claims she's sworn off boy-crushes, so what's with her Blue Crush makeover? Claire Lyons: Spent all summer thinking about Cam's one blue eye and one green eye. But now he's moved on to a new girl faster than you can say cuh-yutest couple. At least Claire finally has a secure spot in the NPC-unless jealousy-flirting breaks the boyfast. . . . The Clique: The only thing harder than getting in is staying in.