The Liars' Club by Mary Karr (1995)
This is a coming of age memoir about a young girl growing up in what most would consider to be a dysfunctional family. The family itself, however, cares about each other in their own offbeat way. Proof of the power of love, the book is humorous and touching at the same time.
Visit Reading Group Guides for more about the book, discussion questions, and an interview with the author.