Introduction: Facing the dark mirror -- Pt. 1: From diapers to Dior. The myth of female solidarity ; Mommy dearest and the evil sister ; Mean girls and Heathers -- Pt. 2: Best rivals and worst friends. The perpetual beauty contest : envy over appearance ; Magical theft : envy over relationships ; Snow queens and soccer moms : envy over children ; Working girls and bossy women : envy on the job -- Pt. 3: Revolutionizing rivalry. Dispelling the demons : how to spin competition, jealousy, and envy in our favor ; Resisting the urge to merge -- Conclusion: A better mirror.