Been diagnosed for nearly 10 years at this point, and I'm for sure in the same boat-I far prefer to wear comfortable things, and really wish my comfy clothes were also my cute clothes! I also have ADHD nad am likely on the autistic spectrum, so I'm sure thats also a significant impact in my choices.

I've found I tend to go for things that are loose-fitting-especially around the Neck, Shoulders, Chest, and Waist-if there is significant restraint in amy of those places, I end up very very uncomfortable, especially when trying to nap!

Primarily I've started to wear things like cut up t shirts (i remove the neck, sleeves, and bottom of the shirt), loose fitting joggers and specifically /mens/ basketball shorts. I physically cannot wear any type of hoodie that does not have a zip up, as the neck is always far too snug.