-shirt
-shorts (during spring/summer)
-pants (during fall/winter)
-underwear/boxers (depends on what I grab out of the drawer)
-socks (optional, usually only when really really tired and just got home from an exam or late-night project)
Either my regular stay-at-home jeans and a shirt and socks or a shirt and sweatpants. Sometimes with my hoodie on. Always, wrapped up like a burrito in my blanket, because that's the only way to keep from freezing to death.
In the summer I usually wear soffe shorts and one of my husbands t-shirts or a tank top.
During the winter I wear flannel pj bottoms with a thermal shirt or t-shirt. I try to match them but that usually doesn't happen. I did get 2 new matching pairs for Christmas, but I have to make the effort to wash them. It's all good though, I just wear a robe over them to cover up the ugly.