One of the toughest parts about creating a costume is fabric– for an existing character the problem can be finding exactly what you need to replicate a specific look, but for a costume where you’re creating something out of whole cloth (pardon the pun) it can be even harder to choose among the vast array of available fabrics to decide what you like best.
And then there’s budget. I’ve got a relatively limited one for this costume, and unfortunately for most historical-style garb you really need something with a nice weight to it (translation: something expensive) if you want it to look good. I thought about stretch velvet, but I don’t have a lot of experience sewing knits and it’s pretty expensive if you don’t want to use panne (I don’t, it makes everything look like a cheap Halloween costume). I looked at saris, figuring they’d have some nice patterns and embellishment to work with, but they don’t often come in gray and almost never with silver accents. Most fashion fabric brocades looked too shiny and/or too modern, plain taffeta was too boring, and it was tough to find home decor brocades in solid gray.
When I finally found a 4-yard lot of 54″ wide muted silver embroidered drapery fabric on eBay for $18 (including shipping!) I couldn’t pass it up. I know fabrics don’t always look as good in person as they do on screen, but this ended up being gorgeous, and luckily not too stiff to drape nicely. According to my pattern it’s a little short to get a whole dress out of, but I’m hopeful that with judicious fabric placement I can get the majority of my dress cut.
For the gores and sleeve puffs I’m using several yards of silvery gray fabric gifted to me by a friend and which is basically “mystery fabric.” I’m fairly sure it’s polyester, it has a subtle texture to it and it drapes well, but apart from that I have no idea. It coordinates perfectly with the embroidered fabric, though, and is heavy enough for a skirt gore but light enough for a sleeve puff. It’s miles better than any of the other options I was looking at online, so I’m thrilled to have it.

Since I’m dealing for the most part with drapery rather than apparel fabric, I’m going to line the whole dress in to mitigate the roughness of the wrong side. The pattern doesn’t call for a lining, but I’m sure I can figure something out. I’d intended to go with white, but ended up picking out a pale lavender lining fabric instead– it coordinates with the gray and I thought it would be pretty, even if no one else will see it.