Editor's note: The following story contains subject matter and descriptions that might not be suitable for some readers. Discretion is advised. News flash: Girls care deeply -- way too deeply -- about how they look. Tell it to the wicked queen from "Snow White," who was neither the first nor the last female to find both her life's obsession and the key to her own ruin simply by looking in the mirror. A girl's driving need to be the fairest (prettiest, thinnest, youngest, blondest, best-dressed) is one of the oldest stories in the book, and we all know that for...