With the changeability of a Cheshire cat, Mary switches her wardrobe. One minute she is a princess, the next a mermaid, the next a cowboy. All this costume versatility involves her weary mother in a fever of washing, ironing and putting away. And then one day Mary is old enough to go to school. From that moment on her desire to change clothes is subdued and she sticks to the appropriate outfit of a schoolgirl. Feminine and yet humorous, the illustrations by the author enhance this story which should appeal, in terms of topic and treatment, to the pre-school child.