Tamara de Lempicka's art continues to captivate audiences due to its unique blend of Art Deco and Renaissance influences, showcasing a glamorous and elegant style. Her powerful depictions of confident and independent women resonate with modern feminist values, contributing to her popularity. Lempicka's ability to capture the essence of the Roaring Twenties and the Jazz Age in her work transports viewers to a bygone era, making it highly appealing. Furthermore, her dramatic life story, filled with passion and intrigue, adds to the mystique surrounding her and her art. Overall, the combination of her distinct artistic style, subject matter, and personal life makes Tamara de Lempicka and her art incredibly popular.

Art Nouveau was a highly popular design style from the late 19th and early 20th centuries, characterized by flowing lines and curves. However, the movement gradually declined and was eventually replaced by other styles, such as Art Deco. The primary reasons for the decline of Art Nouveau include a lack of practical applications, the high cost of materials, and the emergence of new styles. Additionally, the Art Nouveau movement also suffered due to the outbreak of World War I, which shifted public attention away from the decorative arts. Finally, the minimalist nature of Art Deco, which emphasized simplicity and practicality, appealed to many people more than the intricate and often ornate designs of Art Nouveau.