Sonia Delaunay is a French fashion brand founded in 1918 by Ukrainian-born artist and designer Sonia Delaunay. The brand became a pioneer in combining art and fashion, introducing the concept of "simultanism" - a combination of bright colors and geometric shapes that create a sense of movement and rhythm. Maison Sonia Delaunay offered clothing, textiles, and accessories inspired by avant-garde art, making it one of the first conceptual fashion houses of its time. The brand's legacy continues to inspire modern designers and art lovers.