A peignoir, which originally meant a dressing gown worn when combing the hair, also refers to an outer garment, sometimes sheer. The word is often used interchangeably with negligee. No doubt Hollywood helped spread their popularity.
Mary Pickford, Mary Pickford was a world renowned actress born in Toronto. Films and film making was growing industry, especially in Canada. New technology created films with sound "talkies" instead of silent films.