Do you wear nightgowns or 2 piece pajamas?

I wear both/either. Mostly two pieces in the winter and nightgowns (which are really more like slips) in the summer.

No joke, you could wear a "union suit" type pajama - a one piece with no waist band.

ETA: like this

Sorry, just Tee shirt and underwear for me.  But I wore nightgowns growing up and for warmth I would get flannel. If you can keep it from bunching up, they are amazingly warm.  It is probably more about how you sleep, my mother wears them and has no issues.  😄

I don’t like how pajamas and nightgowns twist and move.  If I had to wear a pajama bottom type item it would be like a legging.

ETA - I had a one piece that I loved and was so warm. A pain in the neck if you go to the bathroom a lot during the night. It was shocking to have to take the top down in the cold.  🥶😄

I wear two pieces. Sometimes pants and long sleeve, sometimes I get hot during the night so take the pants off. I’m the summer I wear shorts and a tank or t-shirt.

In the winter, pyjamas. When I'm cold I tuck the top into the bottoms. That helps to keep the elastic waistband off my skin. I also have nightgowns and long t-shirts for when I really don't want to wear bottoms, mainly in the summer. I wore those when I had abdominal surgery and couldn't tolerate anything tight.

I wear slips usually to sleep. Sometimes tank and underwear. I run hot, and would prefer to sleep naked. (Alas, children still climbing in my bed.)

It is pretty silly but if I know I'm really not going to want to work out the next morning, I will sleep in my workout clothes. If I wake up, and I am ready to go, it's one less excuse to not do it.

Winter/cold--2 pc pjs
Summer/ when it's hot--nothing

Both. Winter is for flannel pjs, while summer is for nightgowns, though I do have a lightweight pair of summer pjs. Growing up I always wore a flannel 'granny' gown (made my mom or grandma) and have considered getting another one. If you get cold you can tuck your legs up under the gown to warm up your legs!

Brands I like are Natori, Josie by Natori, PJ Salvage, Eileen Fisher for gowns. My current summer gown is this one by Skarlett Blue.  Very comfortable!  

I only wear nightgowns. I don't wear underwear, either. The parts have to be aired out.
I actually started doing that because I had yeast infections and that was a suggestion. 35 years later and I cannot sleep with underwear or pants.

My legs don't get cold because I am under the covers.
I never use flannel sheets, however, because those are too hot for me. I tend to run hot.

i cannot handle a nightgown. the twisty bunchiness gets to me.

normally tshirt and undies. i don't get cold, if anything i wrap one foot outside the blanket for air to keep from overheating. that was an issue when my cat was a kitten! glad that stage is over.

my room is the coldest room in the house but i would rather add another blanket than sleep with bottoms on.

That is a great idea. It reminds me of my childhood. My dad would get us up ridiculously early to leave for camping trips. We'd sleep in our shorts and tees and sort of stumble to the car with our pillows.

I wear 2 piece pajamas to lounge in after dinner, then take off the pants to sleep. I get too hot to wear the pants.

I do not like nightgowns or commercially prepared pajamas. It is men's oversized tee shirt and printed lounge pants for me. I have character theme lounge pants such as Harry Potter, Mario, Star Wars, Big Bang Theory and Poppin Fresh Dough Boy. Then I use the Silhouette to do a coordinating HTV transfer or printer to do a printed transfer for the tee shirt. Very mature, I know but they are comfortable and I enjoy seeing them.

I have a few knee length gowns that I like, but I don’t like longer gowns. I’m a tosser and a turner in bed, and I just end up wrapped up in fabric. 

Just a tshirt and my underwear. I wear 2 pieces, pants/shorts before bed to lounge around in, then take the pants off to sleep. If need something on my legs to keep warm then our house is too cold! ha. I have flannel sheets on our bed also, and I'm in my 50s so I run hot.

I buy separates so I can customize something since I am fussy about how things fit me in bed. I don't want anything tight, but I also don't want anything around my legs---pants or a night gown. So I wear pajama shorts and a tank top or short sleeve t-shirt. I tend to buy the shorts one size larger than I would wear in everyday shorts to try have a looser fit. And I try for very light weight t-shirts if I'm wearing one of those. A few times I've purchased t-shirts online, only to find they are way too light/see-through for me to want to wear them out and about, so they become my perfect sleeping tees.

If I have an issue with anything being cold, it's my feet, so I've not had to be concerned with my legs, thankfully, because just really can't wear anything that will bunch or twist around them at night. Even as a very little girl, I would take off my pj bottoms or pull my nightgown up around my waist when I went to bed. I would only wear short nightgowns to avoid having a bunch of extra fabric even then.