Guided by her rules, nine-year-old Allie works to get past being just the new girl at school, eagerly awaits the arrival of her kitten, and faces turmoil when her grandmother visits while the family is still settling into their new home.

Now a high school junior, Samantha tries to decide whether she is ready to have sex with her boyfriend, who happens to be the President's son.

Twelve-year-old Olivia is a half orphan who's never met her father. Everything changes when Mia Thermopolis, Princess of Genovia, invites Olivia to finally meet her father.

In a series of humorous diary entries, fifteen-year-old Mia tries to figure out how to raise money for the bankrupt student government at her school while also worrying about how to become a "party girl."

When sixteen-year-old Emerson Watts learns the truth about Nikki, the teen supermodel into whose body Emerson's brain was transplanted, she finds that there is only one person to turn to for help--especially since her loved ones seem to be furious with her.

Meena Harper, forced to write about vampires even though she doesn't believe in them, falls in love with Lucien Antonescu, a modern-day prince with a bit of a dark side. And while Lucien seems like everything Meena has ever dreamed of in a boyfriend, he might turn out to be more like a nightmare.

Having become a proficient liar in order to keep everyone happy, rising high school senior Katie Ellison is stunned when her old middle school friend and local pariah Tommy Sullivan returns to town, and suddenly things start looking a lot different to her.

Sixteen-year-old Steph Landry finds an old book on how to be popular and decides to change her social status by following its advice, much to the bafflement of her two best friends.

While trying to spare Erica's feelings so she could go to Brittany's birthday party, Allie disobeys one of her own rules and lies.

Heather Wells Rocks! Or, at least, she did. That was before she left the pop-idol life behind after she gained a dress size or two, and lost a boyfriend, a recording contract, and her life savings (when Mom took the money and ran off to Argentina). Now that the glamour and glory days of endless mall appearances are in the past, Heather's perfectly happy with her new size 12 shape (the average for the American woman!) and her new job as an assistant...