Youth group slumber party wear pjs there or get changed later?

Ok so im going to a youth group slumber party at my church tomorrow and I don't know if I should wear my pjs there or get changed into them later I just don't want to be the only one who wears pjs there but I also don't want to be the only one who doesn't wear pjs there. keep in mind that it's a very relaxed church too and we don't have dress up to go anyway I just wonder if you were going would you wear your pjs there or would you wear your regular clothes and change later? BTW it starts at 8pm