In the midst of a terrible week, Mia receives a lucky charm from her cousins from Puerto Rico, and when her luck turns around, she attributes it to the charm, but when her bad luck returns, she must come to grips with the truth.

Mia learns that you have to make your own luck—rather than rely on fun trinkets—in the latest addition to the Cupcake Diaries series. Mia is having a truly terrible week. So far she’s failed a pop quiz, ruined a batch of cupcakes, and even dropped some icing on her favorite shirt! But her cousins from Puerto Rico are coming to visit, so Mia has something to look forward to—and they even bring her a little lucky charm as a gift! When Mia’s luck immediately turns around, she’s convinced that her lucky charm really does have magic powers. But what will she do when her bad luck returns?

Katie is about to burst when the rest of the Cupcake Club entrusts her with their secrets, but this group of best friends soon realizes that sharing and keeping secrets is what friends are for.

Mia goes on vacation and meets up with the girls from the Sprinkle Sundays series in the latest addition to the Cupcake Diaries series! Things are slow at the cupcake shop this summer, and so when Mia’s dad invites her on a long weekend trip to meet some of his college friends, she jumps at the chance—especially when she hears they have daughters her age. It turns out the girls work in an ice cream shop. Not only does Mia end up making new friends—she comes back with a new invention for the Cupcake Girls: an ice-cream cone cupcake!

Emma loses a modeling assignment—to Katie!—in the latest addition to the Cupcake Diaries series. When Emma goes on an audition for a new modeling job, Katie tags along to keep her company. But as it turns out, everyone wants Katie to model instead of Emma! At first Emma is happy for her friend. Soon though, she realizes sharing the spotlight isn’t much fun, even if it is with your BFF! Will the Cupcake girls continue to bicker amongst themselves or will they finally realize there’s just one person you need to please—yourself?

"Text by Elizabeth Doyle Carey"--Copyright page.

When Emma's little brother Jake looks after the neighbor's dog in preparation for getting his own puppy, the pet goes missing and Emma and the rest of the girls have to find it before the owner comes home.