Junior Miss by Sally Benson (1939)
She's tall for her twelve years, and heavily built. From her shoulders to her knees she is entirely shapeless, and below her skirt, which is too short for her, her legs are hard and covered with scratches. She wears a sloppy sweater, two charm bracelets of a brassy color, and a locket and chain that fastens so tightly around her neck it seems it might throttle her. In the locket is a rather dim snapshot of a kitten and a clear picture of Tyrone Power, clipped from a movie magazine. She's outgrown her devotion to Tyrone Power, but she still gets a lump in her throat when she remembers the kitten, whose name was Bilgy. She has also outgrown toys at Christmas, but there's something empty about Christmas Day in spite of the jade green lounging pajamas and the silk stockings. She's the girl you loved in the stage and screen plays based on this book, and she personifies all the naive realities and sophisticated fantasies of the in-between years. (from the back cover)
Editorial Comment: Could this be a LESS enticing description? Also, I love the note on the back of the Pocket edition: Share this book with someone in uniform. I'm sure they'll love it!