Sticker Girl and the Cupcake Challenge

Jump into Book 3 of this magical middle grade adventure series with Sticker Girl Martina Rivera!
A gumball machine robot.
Two adorable (and creative) kittens.
An unruly ant farm.
These are just a few of the new stickers waiting to be peeled off of Martina Rivera's new magical sticker sheet and SPRING TO LIFE. Student council is keeping Martina busy with a bake sale and cupcake-savvy Bev is excited to help out. The girls advertise their delicious creations and are thrilled to be invited to participate in a web show baking contest. Can Martina balance school and a ruthless cupcake competition, all while keeping her stickers in check? Or is this a recipe for disaster?
Christy Ottaviano Books