My DS4 has clothing sensitivities too. We've had to cut out all tags, and he will wear only all cotton long sleeves and long pants, even in summer. (He did allow one exception - if we're by the ocean he'll wear shorts. Did I mention we live in MN?) Writing this, i'm suddenly reminded of my own all-cotton preference, which also transferred to my Barbies when i was little. Barbie would only wear GI Joe's clothes, because they were cotton!
And if he had a choice, my son would never change his clothes and never take a bath! So allowing him to dress himself would result in pjs, every day.
