Summer I wear shorts and a t-shirt. Can be any old t and boxerlike shorts, or matchy matchy cotton knit set.
In the winter I wear cotton or flannel sleepwear pants and a long sleeve t-shirt. Sometimes I wear an addition short sleeve t over top for added warmth. I have several pairs of cotton pants some are thin cotton and some very heavy cotton.
It’s june right now and I am still usually wearing very thin pants and a t or long sleeve t.
I have a couple night shirts, but I rarely wear them.
Once in a while if I am exhausted I will just strip off my clothes and collapse into bed, but not often.