Madeleine Vionnet did not invent the bias cut
Madeleine Vionnet did not invent the bias cut, she did something better. Cutting on the diagonal was already used for trims and collars, she was the one who cut a whole dress that way, so the fabric clung and flowed with the body instead of being pinned to it. It made her the quiet engineer of couture. Vogue called her, in 1925, the greatest geometrician among French couturiers. Dresses built like architecture.