When Sydney moves away and is replaced by newcomer Olivia, Alexis becomes the focus of hurtful teasing by the Best Friends Club and begins to wonder if an offhand remark she made when first meeting Olivia may have been taken the wrong way.

"Alexis is the clear leader of the Cupcake Club: She's organized, punctual, and happy to take on the stuff like scheduling, budgets, invoicing, and the things that the other girls don't really want to do. In other words, the "unfun" things. But one day Alexis feels particularly unappreciated and informs the Cupcake Club that she is no longer in charge! After deadlines get missed and supplies aren't bought, the girls realize they definitely need a...

"When Mia reads about a Design-a-Dress contest in a magazine for "budding designers ages 12-16" she is excited. But she doesn't realize how much work designing--and sewing--a dress truly is until she starts on her contest entry. While Mia stresses out about all the work she has to do, she and Katie have an argument about, of all things, fashion preferences! Katie offers suggestions that don't really go with the outfit Mia has in mind. And when Mia...

Moving on with her Cupcake Club friends despite lingering resentment over being ditched by her former best friend for a more popular group, Katie resolves to confront Callie and struggles to find ways to repair the friendship.

Katie has a tough time keeping one secret...what happens when she has to keep four? All of the cupcake girls have secrets and are ready to burst! Katie loves knowing a secret; it's just tough for her to keep them! And in this story all her friends have told her a secret! From new crushes to someone cheating on a math test, Katie doesn't know what to do with all of this juicy information! Can the Cupcake Club survive with everyone keeping secrets from...

When Emma goes for a modeling gig, Katie tags along for support, but when the agency chooses to go with Katie instead, Emma finds herself jealous.