Yes! I'm a TA, absolutely fine!
It will be absolutely fine-I teach nursery, I would much rather have a child come into school on dress up day in pyjamas than in a onsie. Toilet time is a nightmare when you've got multiple children in onsies all desperate for a wee and not being able to undress themselves!
Absolutely! My daughters school has said go in pjs rather than a costume
Yes, definitely no issue
Yes, preschool have had world book week, where the children can dress up all week, my daughter has just worn character onesies so far olaf and bluey
Our nursery have said dress up or pjs. My daughters chosen her Paddington pjs
As a nursery teacher: it will be perfect! People shouldn't judge you it's a good idea!