Belt Pouch and Gown

I was lamenting a while back that I couldn't find any 15c Italian images of belt pouches. Well, I finally found one in this Ghirlandaio portrait of Francesco Sassetti. I swear it looks familiar, but maybe it just looks like some other things I've seen. It's clearly a trapezoidal belt pouch, though the details are a little hard to work out. Now, the date is listed at c. 1487, which matches with the boy's clothes, so this still doesn't give me a belt pouch with the earlier mid-century structured-pleats style, so I'm not going to go crazy yet.

I've also thought about making something like Sassetti's red gown here. I'd like to have something I can just throw on for Friday nights or business meetings or whatnot. I even have some red linen that might do for it. I imagine it should properly be made of wool or at least something heavier than my thin linen, but I don't want to burn up, especially if I wear it over other layers.