What does your baby wear to bed?

We have a newborn and she seems to sleep best being swaddled. So usually we just have her in her diaper and swaddled. However she always unravels the swaddle! I try to get it right but I may just not be good at swaddling. Any tips?

Or what do you have your baby sleep in? Our house seems a bit too hot for a onesie right now so I don’t know if I should do that