I wouldn't spend anything.The school put on the show,they provide the costume.That's the way it was when we were kids.Our school had a store of costumes of all sorts and they were just used every year.
Erin's a star,they asked for white top and black or white leggings,they make the rest,but said not to worry if we didn't have what they need,cos the school have plenty spare.I was going to see if I could get some leggings,but they've told parents NOT to buy anything,so we're going with that.
What's the point in spending a fortune,parents don't care what other people's kids are wearing,they're there to see their own child perform,or they should be