Hi there. I have some tailored white trousers which are sadly too small for me and I'd like to make something similar. The label in them is 97% cotton / 3% elastine and it's quite a structured fabric with a very faint sort-of herringbone structure on the fabric (not a pattern you can see unless you stare closely, they are just plain white trousers). They do have a bit a stretch from the elastine. Any ideas what type of cotton this is? Thanks.