I'm a New Big Sister: A Princess Polly bookBy: Princess Polly I'm a New Big Sister is part of Ladybird's successful Pirate Pete and Princess Polly range introducing children to key milestones in a fun and reassuring way. This Ladybird sound book describes the excitement and fun of having a new sibling. The simple text and colourful illustrations will help little ones understand what happens when a new baby joins the family and how lovely it is to be an older sibling. Pressing the sound button