Note: I'm half Mapuche indian so this was a bit interesting to get to work.
This costume was made out of velvet. That's the only really weird thing about it.
Oh, and the collar and sleeves and bottom are the way they are because I couldn't find a single absolute reference. So maybe there will be one in the future but as of now I don't have one.
Also the sleeves are a bit odd as you can see close up because there was a bit too little fabric and the store didn't sell any velvet of a comparable color.