Although most people think that the traditional dress of the Penninsula’s women has always been the black abaya and black shaylah, this is really not true at all! Take a peep at the website of the Mansoojat Foundation to be educated about the traditional items of clothing worn by the various tribes, regions, towns and villages of pre-modern Saudi Arabia.
Personally, I am really weeping the loss of these traditional forms of clothing, you really just do not see them anymore! (but again, thats typical around the world). Its truly a boon that this foundation was put together to preserve traditions which few know about.