Carolyn Mackler, THE EARTH, MY BUTT, AND OTHER BIG ROUND THINGS

Good realistic YA. Virginia Shreves (named for V Woolf), has an older brother whom everyone holds up as a paragon of virtue ... until he date rapes someone at Columbia University. The mother in this book is perhaps too sharply drawn as the psychiatrist mother who has no idea what's going on with her own kids; but Virginia's struggles to put dieting aside as a substitute for living and her fears about dating and losing friends who move away are drawn with a deft hand. Good for the 13+ crowd.