My Big Girl Bed is part of Ladybird's best-selling Pirate Pete and Princess Polly book series for toddlers and young children, starring the ever-popular Princess Polly! Princess Polly: My Big Girl Bed describes the excitement of moving from a cot to a big bed and all the stages along the way, such as choosing bedding, getting rid of the cot and finally Princess Polly discovering what it's like to sleep all night in a big bed of her own. Listen along with the audio narration as Princess Polly tries her big girl bed for the first time. The simple text and colourful illustrations will help little girls understand more about sleeping in a big bed; even why it may at first seem a bit daunting, but how in the end moving to a big bed is an important stage of growing up.