The sister switch

Identical twins Andie and Caitlin could not be less alike, and as they start junior high, they hope to finally develop their own identities, until a fitness test threatens to ruin Caitlin's year and she convinces Andie to switch places for the day, with some surprising results. As identical twins Andie and Caitlin start junior high, they hope to develop their own identities, until a fitness test threatens to ruin Caitlin's year and she convinces Andie to switch places for the day. The coauthor is Sarah Hines Stephens. Book #11