The “Spirit of Electricity” costume made by Worth for Alice Vanderbilt, 1883. It comprises a dress of seventeenth-century inspiration in midnight-blue velvet, overlaid with white satin on the bodice and gold satin on the skirt, embroidered with sequins, beads, and crystals. Museum of the City of New York (51.284.3a-h) Photo © 2011 David Arky