Lord Gwyn Cosplay Help
So I plan to go to a convention in my city and cosplay as Lord Gwyn from Dark Souls 1. I can easily make his sword, face, hair, and armor pieces. The problem I have is I can't really find a good, cheap robe to go with the costume. I'd be really happy if I had some suggestions on things I could do to have his old tattered robe. I'm new to cosplaying and didn't know if there was a good website to get things like this, or tricks to making thinks. Thanks!
The pictures that are attachments are a few of the pictures I am using for reference.