chiffon

noun2

1. •
   A lightweight, balanced plain-woven sheer fabric, or gauze, like gossamer, woven of alternate S- and Z-twist crepe (high-twist) yarns made of silk, polyester, or cotton.

   • Her dresses are made from these marvelous chiffons.
2. •
   Any purely ornamental accessory on a woman's dress, such as a bunch of ribbon, lace, etc.