There is a pleat, or a certain type of gown, known as a Watteau Pleat or a Watteau Gown, though the painter Watteau doesn’t seem to have had much to do with its invention. He merely depicted the look repeatedly, famously, and once in petal pink satin on the back of a woman ascending a step. The latter stars in a shop sign commissioned by a man who made his living selling art and baubles to aristocrats, though it’s unclear whether artist or client truly expected the painting to advertise anything other than itself.