GOSH I LOVE MARIBELLE I’M SO GLAD YOU ASKED
wow there is so much you could do with this, honestly a lot of it is up to personal interpretation/etc BUT here’s just some ideas!!!
The brown bits I would make out of leather/a nice pleather, pretty much no matter what, that’s just what they look like to me. you could use craft foam or neoprene to give them more dimension too if you wanted!!!!
For the white shirt with the puffy sleeves I would make that out of some kind of thicker cotton jersey, which would make it a bit easier to move around and would sit better on your chest! You could also make it out of cotton sateen but you might need darts/princess seams to get it to sit right on your boob area. Same goes for the neck scarf thing, I’d make it out of a matching jersey (honestly i’d go with cotton jersey over sateen on the neck thing, it would sit better and be way more comfy)
okaY for the light pink part there’s a few ways you could do it, and right now spandex house has this GORGEOUS leather look stretch pleather in light pink, and I would consider using that for the underbust ‘corset’ thing and the gloves, then get a matching cotton jersey for the pants/capelet!! Since you’re going to need to make gloves you’re going to have to buy gloves to paint pink or make gloves out of a stretch material, which is why i think the pleather might be a cool idea!!! But, you could also use cotton jersey for the gloves/underbust corset thing or cotton sateen for the underbust corset/pants.
the dark pink on the top half of the costume i would use either cotton sateen or a pleather depending on the look you’re going for, and for the pants I would use either a cotton sateen or a thick jersey, depending on what you used for the light pink part.
I hope that helped and didn’t just confuse you more!!! Basically, it’s up to you and what you think will look good BUT i seriously suggest using something stretch for the white blouse/neck scarf, and the pink gloves just to make your own life easier!! everything else is free game!!!! Also, with natural fibers like cotton sateen and jersey you can dye them!!! And I’m like 90% positive i’ve seen cotton sateen/jersey in those colors before! they’re out there!!