From www.museum-joanneum.at/en/schloss_eggenberg; spots removed with Photoshop and image enlarged by half by gogm.
This is a close up from the 1750 portrait of Maria Theresia in Graz, the last image.
Keywords: 1750, Empress Maria Theresia, Empress, Habsburg family, Austrian, long straight coiffure, hair jewelry, scoop neckline, modesty piece, elbow length full sleeves, engageantes, lace, half bodice, tabbed bodice, vee waistline, panniers, pendaloque earrings, jeweled bodice ornament, fan, robes, regalia