Hi Lawrence. Below, see a sketch of a Welsh Lady - based on a picture of a real Welsh woman named Gwenllian Llwyd from the town of Llangollen. She is wearing the Welsh National Costume of what a local gal would have been wearing in the 1820's. The real garments can be seen at the Welsh National Folk Museum at a place called Saint Fagans - on the outskirts of Cardiff in South Wales. Well worth a visit if you are ever in the area.
You don't see these clothes being worn much nowadays - and there are folks who feel that these old fashioned garments give a somewhat negative view of Wales - as a backward looking Nation, dwelling overmuch on the past. However, on Saint David's day ( just gone - March 1st), you will still see young girls going to school dressed just like this, just for the day - as it is a holiday occasion in Wales - and concerts with singing of Welsh songs and small plays etcetera take place in schools in the morning - and the kids get the afternoon off!
Hope that fills in a few gaps in your knowledge
- all the best bach, Johnnybach.