"Who's afraid of middle school? Not Katie Brown. After all, it can't be that different from elementary school. But, boy, was she ever wrong! After her best friend ditches her for a new group of friends called the Popular Girls Club, Katie is left alone and starts to wonder if there's an Unpopular Girls Club she can join. Luckily, Katie finds her way with a great new group of friends and together they form their own club. Four friends plus cupcakes...

Mia asks the girls in the Cupcake Club to be junior bridesmaids in her mother's wedding

Katie starts to realize that doing what you love always makes the batter sweeter

"Emma is not thrilled with always needing to rearrange he schedule to babysit her younger brother, Jake, after school. But it's summer, and Emma is free--or so she thinks. Emma's parents have broken the news that really threatens to push Emma over the edge: Emma and Jake are going to the same day camp together. And Emma will have to babysit Jake on the bus. Every day. Can't Emma catch a break?"--Publisher

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

The Special Day wedding salon is running an ad in the local newspaper, and they want Emma to model in the advertisement. The ad is a huge hit and suddenly Emma is very much in demand. But after running all over New York City for auditions, Emma realizes being a model is a lot tougher than she thought. Does Emma really want to be America's next top model, or is being a part of the Cupcake Club sweet enough?

For as long as Katie can remember, it's just been her and her mom. But that's about to change. First her mom gets a boyfriend. And then Katie gets an email from her dad, whom she's never met, saying he wants to get together. Katie's not sure she's ready for so much change in her life. With so much happening at once, Katie's counting on her friends in the Cupcake Club to help her find the sweet side of what seems like a sticky situation

"Hollywood star Romaine Ford is back in town, and she needs cupcakes for her movie premiere ... and her wedding! But everything is top-secret. Emma is asked to make the cupcakes, but she can't tell the rest of the club who they are for! Romaine doesn't want any paparazzi to ruin her wedding, and she feels the less people who know, the better. Can Emma fulfill this order without spilling the secret to her best friends?"--Publisher's website

"Katie's mom asks Katie for a huge favor: will she spend some time with Emily, her boyfriend's daughter? Katie agrees and brings Emily to a Cupcake Club meeting. Things go well--almost too well. Everyone likes Emily so much, Katie wonders if her friends like Emily more than they like her! And if her mom marries Emily's dad, will Emily become her favorite daughter? Katie is an only child, so all this sibling stuff is new to her. She's starting from...

"Emma is playing ball with her brothers on an unusually warm winter afternoon. But an errant toss from her brother Matt hits her right on the nose! Luckily, it's nothing more serious than a little swelling, but it's enough to make her lose an important modeling job at The Special Day salon. Mona hires "mean girl" Olivia Allen to fill in. Olivia is thrilled, not only for the job, but also for a chance to spread some nasty rumors about Emma. Worst of...

"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...

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

Worried about meeting her biological father, Katie is blindsided by the news that her mother's boyfriend intends to propose to her mom

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