From French peau de soie (“skin of silk”), perhaps originally a trademark.
peau de soie (uncountable)
- A heavy closely-woven silk fabric, faced with satin on both sides.
2006, Thomas Pynchon, Against the Day, Vintage, published 2007, page 611:She was in pale violet peau de soie, and a hat so beguiling that Kit was only momentarily surprised to find himself with an erection.