Arlene and Ilene love so many things about being identical twins.

They like sharing a room, sharing friends, and wearing matching outfits. But they’re in different classes at school, and one twin has a scar that the other one doesn’t.

One morning, their friends Monty and Joey point out a new difference that takes the sisters by surprise and gets them thinking: if they are identical twins, why are there differences between them at all?

• Now in paperback, the second installment featuring the Kelly twins from beloved chapter book writer Johanna Hurwitz, author of the Monty titles. 
• Features two rites of passage: a sleepover and losing a tooth. Another rite of passage for a twin: doing something separate from your twin for the first time voluntarily. 
• For twins, triplets, or any kid who's ever wondered about or fantasized being a twin — a look at what it feels like to have someone in the world (almost) exactly like you!