You might consider an alternate fabric, then. Silk or wool for your nightclothes, perhaps. It may be wise to muzzle the animal at night, as well. [He has little tolerance for willful creatures. It's one of the reasons his own Spirit, Descartes, annoys him to such an extraordinary degree.]

I take it you will be in need of additional items for your wardrobe apart from a single shirt, though? I have some experience in assisting my employer with identifying the most suitable clothing, should you require assistance in that matter.