Chiffon is an extremely thin, light and semi-sheer plain-weave fabric made from tightly twisted yarn, historically silk and now also viscose or synthetics. Unlike stiff organza, chiffon is soft and fluid: it streams, falls in light waves and stirs almost imperceptibly with movement. This is why it is adored in evening dresses, blouses, scarves, ruffles and layered cutting, where airy, romantic lightness is wanted. Chiffon is very delicate and 'slippery' to work with: it stretches, frays at the edges and calls for skilful cutting and careful, gentle washing.