Shirt progress

[stellar_muddle]

It is starting to look a little more shirt like. The collar is attached to the bulk of the shirt, but not finished yet as I need to put some form of stiffening in to keep the collar up. Any suggestions of a good fabric for that? It is going to get cold washed, so needs to be washable.
You can see a bit more detail below:


Yes, you will have noticed far more of a tendency to post photos of projects in progress. Rather than just clutter the sofa and lounge and floors, I thought I would clutter the internet as well. Mind you, I like hearing about/seeing what other people are up to/doing. And yes, I prefer to put the little buggers behind a cut because I have seen what photos can do to an unwary friends page, and the speed of loading thereof.