An original “princess in a tower” tale with a startling twist. A never-revealed donor gives seven-year-old Roselupin a chest of yarn with the note: “knit what you want.” Having spent her entire life in a tall tower, thanks to an overprotective royal father, she takes thought, then knits a red wolf suit that causes her to grow hairy and huge enough to burst through the walls. After celebrating with a wild dance, she sets out to find others like her—not noticing that the costume is unraveling behind her. When the frightened king sends out searchers to discover what became of the monster, they return with the dour princess, who soon finds herself locked into an even stronger tower. Undaunted, she again takes thought, and knits her father “a rather mousy-looking pair of pajamas.” Though the scarlet behemoth bounding joyously through ankle-deep woods makes an arresting central image, readers willing to look more closely at Shannon’s shadowy, atmospheric paintings will find subtle clues in little Roselupin’s face that there’s more to her than meets the eye. Though turning her father into a mouse may seem a rather draconian way to win freedom, her tough-mindedness may give children feeling similarly smothered both amusement and vicarious relief. (Picture book. 8-10)