Millie Christine McKoy, the celebrated conjoined twin performers born into slavery in North Carolina in 1851, are depicted here in a full-length studio portrait on an albumen cabinet card. The two women stand back-to-back, joined at the lower spine, and face in opposite directions toward the camera with composed, direct expressions. The mount features a scalloped edge with a dark decorative border, and the lower panel bears the printed text "Millie Christine, Compliments, Museum, Palace Theatre." An embossed reverse indicates the photograph was made by Wendt of Boonton, New Jersey, with a partially legible studio stamp visible.

Both women are dressed in matching boldly striped satin gowns with wide vertical bands, fitted bodices with decorative button trim at the sleeves, and full skirts. Their hair is styled up in matching arrangements with small ornamental pins, and one figure wears a bracelet at the wrist. A carved studio column with draped fabric stands at the left, and a patterned prop block is visible at the right.

Millie Christine toured extensively throughout the United States and Europe from the 1860s through the 1890s, billed variously as the "Two-Headed Nightingale" and the "Carolina Twin," performing song, dance, and multilingual recitations before royalty and general audiences alike. They were among the most famous and well-compensated performers of the nineteenth-century exhibition circuit.