Don’t be scared off by the guy in the pirate shirt.
I love doing random image searches on the googles, because you find the greatest websites. For instance, The Vintage Shirt Company. They supply shirts, collars, kilt socks, sock garters, etc etc for costume dramas. Everything you ever wanted under one roof. You can order all sorts of stuff online. They also have these really cheap black polyester ties with the winning description, “For the inevitable funeral scene.” Geniuses.
Here are some of my favorites: