Normally I just keep these to the megas since we dont have a c/weaving, and these dont really feel like they belong in c/art, but since this one is specifically from a movie I thought I'd post it here too!
I copied the pattern from a screenshot I was able to take when they're in Iceland, even though its still pretty hard to see. Luckly the whole pattern is completely visible, if blurry and pixilated, so I was able to work it out. I wish I could get the one Olga is wearing but hers isnt ever very visible.
Heres the full belt. The pattern completely reverses itself on the other side which looks fantastic. The flipped angle of the way the warp threads twist makes that jagged look, its not visible very from a distance.
More info about the pattern can be found in this post
Thats not a bad idea. Even if they dont have the actual patterns themselves, if they have images of the belts or even the full costumes it would be enough for me to work backward from.