I understand the whole play clothes thing but when we do painting and crafts that would get messy, I put an old shirt on over their clothes (old shirt of mine, theirs, my daughters, whatever) like an art smock. Whether they're wearing play clothes or not (at least in my opinion) it doesn't mean they should be able to trash whatever they're wearing. I only think this way because when my daughter went to daycare when she was younger, her clothes would be so dirty sometimes after picking her up it would drive me crazy...play clothes or not, they're still wearing them and someone spent money on them at one time or another. You could also ask each parent to send in an art smock for each child if you don't have extra clothes laying around (unlike myself who still has clothes from 10 years ago laying around because i WILL fit back in them someday! Haha)

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