Fifteen-year-old Colie, a former fat girl, spends the summer working as a waitress in a beachside restaurant, staying with her overweight and eccentric Aunt Mira, and trying to explore her sense of self.

Twelve-year-old Jenny and the other members of the Snob Squad suspect that one of them, or someone close to them, is behind the thefts at their school.

Overweight thirteen-year-old Celeste begins a campaign to lose weight in order to make sure she does not win the Miss HuskeyPeach modeling challenge, in which her mother and aunt have entered her--against her wishes.

Feeling like she does not fit in with the other members of her family, who are all thin, brilliant, and good-looking, fifteen-year-old Virginia tries to deal with her self-image, her first physical relationship, and her disillusionment with some of the people closest to her.

Third-grader Sofia wants to wear a beautiful, hand-me-down dress to her cousin Rosario's quinceañara, but first she will have to lose some weight by exercising and eating healthier foods, with help from her mother and sister.