num_pages: 110
description: When her look-alike younger sister Lucy gets promoted into her fifth grade class, Cynthia feels that she must fight to retain her own individuality.
language: English
title: The One and Only Cynthia Jane Thornton
titlecomplete: The One and Only Cynthia Jane Thornton
genres: Childrens, Realistic Fiction
ratings_count: 12
publisher: Simon & Schuster Children's Publishing