A successful artist and illustrator, owner of a popular beau monde salon in Paris, Chevalier of the Legion of Honor et cetera. A rare woman in those days reached such heights. Obviously, she did not suffer from excessive modesty, since she depicted herself on the poster (frankly embellished), although the event was not her personal benefit performance.
Now about the event. It was the World Columbian Exposition1893. Not in the sense of the state of Colombia, but in the sense - in honor of the 400th anniversary of Columbus's sailing to America. And she went to Chicago. There were many participants, and our God-saved fatherland also built a very gingerbread pavilion (see photo in the comments).