@Cassiopeia
mmkay. I just wanted to make sure incase your parents are concerned about having a non minor male over.
@Naru
I have done some research on the matter and I also suggest talking to Amaya.
I remember it being made of charcoal grey wool dress with a white petticoat. tie is dark green
as for doing the puff sleeves, the pattern for wizard of oz is what I used for the puff sleeves on my priestess, so that may work for you here.
I'll likely have to do some browsing to see if I can find the right fabric to make the St. Lulim uniform. If not, I may buy that uniform off ebay that I provide a link to before. then I just have to get the jacket, wig, shoes, and socks.