Sonia Delaunay was born in Odessa, in present-day Ukraine, in 1885. She grew up in St Petersburg and studied art in Karlsruhe and Paris, where she met Robert Delaunay, whom she married in 1910. Together they developed Orphism, an approach to painting based on the expressive and dynamic relationships between colours. Sonia extended these principles beyond painting to textiles, fashion, book design and theatre costumes and sets. In 1931 she joined the Abstraction-Création group. In 1937, she and Robert created monumental decorations for the International Exposition in Paris.