From JoAnn Deak, Girls Will Be Girls: Raising Confident and Courageous Daughters (NY: Hyperion, 2002), p. 99—
[Preadolescent girls, called tweens] cluster together and need to act alike, talk alike, and look alike for the protective camouflage it provides. It reminds me of a Discovery Channel program about running zebras: The stripes made them all blend together so that any predatory animal would have a hard time singling out any one zebra.
