My favorite part of sewing! Buying stuff! (/eyes my 4 bins of fabric ) So whether historically or fantasy-y, outerwear would commonly be made out of wool. It was an easily accessible fabric, that could be woven in varying patterns or weights. If you want to use wool, here are some of my favorite sites for buying it: Burnley and Trowbridge Can't go wrong with classic black! Or channel your inner hobbit with a dark green. Fabric Mart is another favorite! They get bolt ends from other suppliers, so they never have the same thing twice. Note, never buy something from there full price. They always have rotating sales, so wait for a P-Z sale before buying their Wool. I mean, magenta pink cashmere blend? At 60" wide you wouldn't need a lot. Denver Fabrics Wool blends are also a great way to save some money. Here is a sophisticated gray/black stripe in a wool/rayon. That will give you something nice and drapey. If you want to fake the look of wool but don't want the price tag, look for cotton flannel. Fabric Wholesale Direct has a cotton flannel in a dozen colors. Of course, you don't have to limit yourself to wool or wool-looks. How cute would this be in a nice cotton plaid? Or challenge yourself and have a third layer of lace fabric on the outside, treated as one with your outer fabric? Cyan lace for 1.99/yd! Any and all of these can be used for the inner fabric as well! Personally, I'm going extra luxurious and lining mine with silk. The nice thing about many silks is the slippery-ness helps the outerwear slide along your inner-wear and not get stuck on you (this is why coats have a slippery lining). Dharma Fabrics is the most inexpensive place around if you don't mind plain white. Cotton or rayon sateen will not be as shiny as silk, but will have a nice drape and texture while be way easier to work with and way less expensive (and a bunch of the above linked places carry it). This is also totally findable in the form of sheets at Goodwill or other thrift stores if you get lucky! Note, this is totally not exhaustive. I do nearly all my fabric shopping online, so if you are looking for something specific post it here, and I'd be happy to go on an online hunt for it!