I feel like I've managed to shave down my packing list in so many ways, largely thanks to all the tips on here! But one thing I still struggle with is pajamas. I have this nagging feeling like they should almost be unnecessary, but I haven't quite managed to convince myself to just sleep in my undies. And for those of us who travel on the cheap and stay in hostels, where even a private room may mean a shared bathroom, covering up at night is a bit of a necessity.
So, I'm curious, what do people do for packing pajamas? Just your old standbys from at home (recommendations for comfy PJs are quite welcome - bonus points if they also don't take up too much space for packing)? One set or more for longer trips? Sleep in your undies from the day before? Embrace nudity for the ultimate in packing ultralight?