I don't even have a pair of matching pajamas, to be honest. I wear sweatpants and a sweatshirt in the cooler months, and then swap to loose short sleeved or sleeveless shirts and stretchy shorts for the summer.
Except for the fact that they're loose and comfortable, nothing about my pajamas match... seriously, I'm wearing gray shorts and have on a sleeveless yellow shirt underneath a practically sleeveless pale blue shirt with a picture of a deer playing an accordion of the front.
A deer. Playing an accordion.
You can't find a matching piece for that!