I'm afab and 6'0 and finding jeans that were long enough was a struggle when I was presenting as female. American Eagle actually makes jeans in Extra-Long that you have to order online. I think it goes up to a size 14 in the X-Long sizes. They were a great find for me if that helps. https://www.ae.com/women-jeans/web/s-cat/6430042
Well in that case go and try things out. Once you get a sense of size you can order stuff online. But if you're like me you can fit in anywhere from a small to clear. But I can't cheat my size 11 feet... still. Nothing beats going out tand trying on. As far as larger brands? Merrell, Nine West, Frye all have shoes from 11 to 12 women's and are roomy. I own many pairs of each. Dresses aren't so hard to find at 6 feet tall.
There is an ebay store that specializes in larger size womens shoes. I thought I had it book marked but I can't seem to find it. They had shoe sizes up to 17 wide in womens sizes and the prices were reasonable. I've had zero luck finding any 16 wide shoes at retail stores or at thrift shops, so I was pretty stoked to find them online.