Florine Stettheimer (1871-1944) was an American modernist of German-Jewish heritage living in New York. She was a painter, designer, and poet. Together with her sisters Ettie and Carrie, Stettheimer hosted a legendary salon on the Upper West Side, where they entertained the likes of Marcel Duchamp, Carl Van Vechten, Henri McBride, and Georgia O'Keeffe. In 1934 Stettheimer designed the set and costumes for Gertrude Stein's opera Four Saints in Three Acts to much acclaim.