With an author’s note about what big siblings need, extra guidance, reassurance and love. I'm a Big Sister book helps to prepare their young ones for their first big transition. “Someone new is at our house,” begins this loving, reassuring celebration of brotherhood from trusted author Joanna Cole. Told through the eyes of a new older brother, this simple story lays out all the good things about being an older sibling, and just how exciting welcoming a new member to the family can be.