"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.

With an author's note about what big siblings need—extra guidance, reassurance, love—and sweet, engaging artwork by Rosalinda Kightley, it's no wonder that nearly 4 million families have chosen I’m a Big Brother and I’m a Big Sister to prepare their young ones for their first big transition.