At Park Street School, you have the Popular Girls. They even have a Popular Girls Club. But what happens when you aren't invited to join? Do you start an Unpopular Club? No, you start a Cupcake Club! This second book from "The Cupcake Diaries" is told through the perspective of Mia. Like the other members of the club, readers will get a chance to know the new girl in school. Mia has never had a problem making friends before. Her motto is to be open and friendly with everyone. However, not everyone at Park Street school believes in mixing in with different groups of friends. When the Popular Girls Club takes interest in Mia's keen fashion sense and decide to recruit her, Mia has to decide between them and the Cupcake Club members. What's a girl to do?