This could be the costumes:
https://www.heavencostumes.com.au/me...image-1200.jpg
https://assets.yandycdn.com/thumbs/R...3HALLOWEEN.jpg
And these could be the pjs:
https://m.media-amazon.com/images/I/...AC_UY1100_.jpg (I've been kind with this one)
https://encrypted-tbn0.gstatic.com/i...0v47A&usqp=CAU
Just came to mind:
What if you used this costume (whichever is chosen) to go raise money for charity, when you go? It's in a couple of weeks, still, if I'm not wrong, so you should have time to get the costume, right?