From the Sotheby's Web site. Another version of this image was posted to Pinterest as Gräfin Dorothea Charlotte von Hohenzollern-Weikersheim, geb. Prinzessin von Brandenburg-Kulmbach.
The large pattern of the cloth and the cuffed sleeves date this to the earlier 1700s, maybe ca. 1730.
Keywords: Pesne, straight coiffure, hair jewelry, U-neckline, lace bertha, elbow length close notched sleeves, lace engageantes, vee waistline, full skirt, clasps, robes, regalia, round gown