Georgia O'Keeffe: the Brightness of Light is a 2-hour documentary exploring the life and art of the most important woman artist of the 20th century – the "Mother of Modernism." In the 1920s, O’Keeffe became famous for her paintings of flowers, bones, and the beauty of nature. She posed nude for shocking photographs by Alfred Stieglitz, but denied that her paintings depicted sexual imagery. In the 1970s, she emerged as an iconic role model for women.