She's practically perfect, Megan said thoughtfully. She repeated the new girl's name, practicing the way Ms. Endee had written it on the whiteboard. Alexis Powell. Megan has spent forever planning her positively purple birthday sleepover. She's even made glittery purple invitations for every girl in her class. Then a new girl, Alexis, joins their class. Alexis seems perfect: She's smart, pretty, and rules the soccer games on the playground...