Sticker girl and the cupcake challenge

"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?"--Back cover.