T-shirt and panties, generally. 33 and I’m with Elfkin or whomever said it felt weird to sleep naked back there on page one.
My son, however, ditched the jammies around the same age. He’s all about lounging in his shorts as much as possible.
As a child I slept in nightgowns, and hated the way they’d end up in a bunch around my armpits. Now I usually go for a T shirt and underwear year round. Well, maybe some socks for my cold feet in winter.
My six year old asked to sleep just in her underwear for the first time tonight. Though about it for a second and figured why not. Her 3 year old brother sleeps in a tshirt and pull ups. He hates wearing pants, no matter how cold it is.
I just sleep in whatever clothes I wore that day. Usually shirtless, though.