Three princesses just slightly overdressed (and their pets). Archduchess Maria Teresa of Austria. 1771. Niece of the slightly more famous Marie Antoinette. Anton Raphael Mengs, artist. Image in the public domain. via commons.wikimedia.org. Unknown Polish princess of the Vasa dynasty in Spanish costume. ca 1644. Peeter Danckers de Rij, artist. Artwork in the public domain. via commons.wikimedia.org. Carlota Joaquina de Bourbon, Queen of Portugal and Princess of Spain. 1785. Mariano Salvador Maella, artist. Collection of the Prado National Museum. Artwork in the public domain. via commons.wikimedia.org.