While I have found the Cles family is Italian aristocracy, I can find nothing about Giuseppina Cles. The order bow was a strong indicator that this person is an aristocrat. A portrait of Urszula Dembińska is posted here.
From digilander.libero.it/tridad/lampi/Image9. Also posted to the Reign of Louis XVI - 1775 to 1789 Album here.