What do you do when you have an incredibly annoying little sister? Write her letters telling her so, of course! From New York Times bestselling author Alison McGhee comes a wickedly funny, illustrated, heartwarming, and searingly honest collection of letters from an older brother to his little sister.

Whininess, annoyingness, afraid of the darkness, refusal to eat lima beans, and pulling brother's hair. These are the criteria on which little sisters are graded. Inspired by the notes Alison McGhee's own kids would write each other, this heavily illustrated collection of letters and messages from an older brother to his little sister reveal the special love--or, at the very least, tolerance--siblings have for each other.