Leonetto Cappiello (1875 - 1942) was an Italian advertising agent, illustrator and painter who had great success in France. An exhibition at the Musée d'Orsay offers a selection of his works highlighting the sense of spectacle of Cappiello who was a witness to the life and evenings of the Belle Epoque. Using a luminous medium and with great visual sobriety, the artist gave life to illustrations where sinuous slender dancing silhouettes, wavy hair and fashion accessories with wavy feathers come to life. From a simple sketch, a caricature or a portrait, an entire creative universe emerges in Cappiello animated by elegant women, playwrights, composers, declaiming actors, musicians in rehearsal, spectators and celebrities.