Jules Alexandre Grün was a French painter, illustrator, and poster artist celebrated for his vibrant depictions of Parisian society during the Belle Époque. Trained at the École des Arts Décoratifs in Paris, Grün gained early recognition for his bold advertising posters before establishing himself as a successful painter of elegant social gatherings, theatrical scenes, and fashionable portraits. His lively compositions captured the glamour, sophistication, and energy of late 19th- and early 20th-century France with rich color, fluid brushwork, and keen observation. Grün regularly exhibited at the Paris Salon, where his work earned critical acclaim, and he became one of the era's leading chroniclers of Parisian high society. Today, his paintings and posters are admired for their celebration of Belle Époque culture and their enduring contribution to French art and illustration.