The Lion, the Witch, and the Wardrobe
How we cite our quotes:
And they themselves grew and changed as the years passed over them. And Peter became a tall and deep chested man and a great warrior, and he was called King Peter the Magnificent. And Susan grew into a tall and gracious woman with black hair that fell almost to her feet and the Kings of the countries beyond the sea began to send ambassadors asking for her hand in marriage. And she was called Queen Susan the Gentle. Edmund was a graver and quieter man than Peter, and great in council and judgement. He was called King Edmund the Just. But as for Lucy, she was always gay and golden haired, and all Princes in those parts desired her to be their Queen, and her own people called her Queen Lucy the Valiant. (17.21)
Although each of the Pevensie children undergoes a transformation to adulthood at the end of the book, all of these transformations will be reversed when they go back to England.