The Appetites of Girls by Pamela Moses:
Self-doubting Ruth is coddled by her immigrant mother who uses food to soothe and control. Defiant Francesca believes her heavy frame shames her Park Avenue society family and, to provoke them, consumes everything in sight. Lonely Opal longs to be included in her glamorous, adventure-seeking mother’s dinner dates—until a disturbing encounter forever changes her desires. Finally, Setsu, a promising violinist, staves off conflict with her jealous older brother by allowing him to take away the choicest morsels from her dinner plate—and from her future. College brings the four young women together as suitemates, where their stories and appetites collide. Here they make a pact to maintain their friendships into adulthood, but each must first find strength and her way in the world.