Is it normal to wear the same pajamas every night?
Depends.It depends
Yes, it’s common to wear the same pajamas for a few nights in a row. If you mean never washing them, that’s less ideal—wash them sooner if they get sweaty, dirty, or smelly.
Lots of people rewear pajamas for a few nights, especially if they shower before bed and don’t sweat much. It’s one of those small habits where people’s routines vary a lot.
If you mean the exact same pair every night without washing it, it’ll collect sweat and skin oils over time, so toss it in the laundry regularly—and sooner if it’s damp, dirty, or smells off. Otherwise, no need to feel weird about repeating your favorite set.