Prefer "au naturel" in bed - more comfortable and lets skin breathe. In winter if we have an exceptionally cold night I wear one of my husband's t-shirts, although I have an electric blanket which keeps me warm. As the t-shirt is not worn every night I wash it after each wear.
I wear a nightie to bed at night. I wash it every second day. I tend to sweat a lot in bed, so wouldn't wear night clothes that smelt of sweat for longer than a couple of days. I am not the only one sleeping in my bed, so I have to consider my husband. Sweaty, smelly nighties are NOT sexy either.
Well I only wear a T shirt to bed. However, I have to wear that said T shirt because if a murderer decides I am to be his/her victim, I would hate to have the police find me dead AND naked. Of course, I don't wear anything on the bottom, so I will have to rethink all of this, as if I do get murdered in my sleep, the bottom half has to be a priority.
In winter I wear a long T shirt. They are cotton and they are cheap and they are probably a T shirt meant for a male. Because they are so cheap, I wear a clean one every night, because I have about 8 of them. In summer I wear lighter ones, still cotton, still big and still probably meant for a male.
I have to have a clean T shirt every night. I don't wear anything at all on the bottom.
I do this because I sleep with my husband and I have to consider him.
Shower every night before bed and clean T shirt on every night.
I sleep alone, wear my pj's for a week in winter, changing them on the day I change my sheets. In summer I wear nighties mostly. I shower once a day if I'm staying home, or twice a day, if I'm going out for the day. In summer, if I'm staying home & I'm really hot during the day, I'll have 2 or 3 very quick cold showers, to cool me down.