The doll is two-headed and two-bodied—one black body and one white, conjoined at the lower waist where the hips and legs would ordinarily be. The lining of one's dress is the outside of the other’s, so that the skirt flips over to conceal one body when the other is upright.The topsy-turvy doll, as it’s known, most likely originated in American plantation nurseries of the early 19th century. By the mid-20th century, they’d grown so popular that they were mass-manufactured and widely available in department stores across the country.