None of us—neither Dorothy, Kristi, nor I—anticipated the impact we felt mixing with hundreds of pairs of twins, most of them dressed identically and celebrating their twinship. Kristi felt she had entered an episode of The X-Files. Dorothy and I were as shocked as Kristi. Being in the midst of so many twins who celebrated their twinship by emphasizing their likeness evoked a visceral response—grown adults should not be doing this, we said to each other. But as we did our interviews, we began to appreciate how our subjects, like us, have come to balance their mutuality and individuality. What is unique about festival behavior is that it is an in-your-face “rite of reversal” in which twins become the valued norm and singletons the deviant other.