Ann Galardi is 16 - and a size 16. She's always struggled with her weight, and her perfect size 6 mother. This summer, it's worse: Aunt Jackie's getting married in August, and Ann's her bridesmaid. She decides she's losing 45 pounds in two months-or else. Thus begins a rollicking odyssey that features an infomercial diet plan, unfortunate dance lessons, a series of mortifying encounters with an adorable guy, and some revelations about Ann's not-so perfect mother.