30 Books to Pick Up Before You Go on Vacation With Your Best Friends

In Best Friends Forever, Addie and Valerie have been best friends since they were nine years old, but when they become teenagers, a betrayal ruins their friendship and leads the two down very different paths. Fifteen years later, Valerie shows up on Addie's doorstep terrified, with blood on her clothes, needing help. Expect the same kind of touching, witty observations about the ins and outs of female friendship that Jennifer Weiner nailed in other novels like In Her Shoes and Good in Bed.