Hi there;
I expect my son to get dirty wherever he plays. And, as a daycare provider my rule is, "if you don't want them to get dirty in it, don't send them in it." The thing is I buy most things for him gently used and he loves it..He still gets to be in brand names, but mommy didn't spend a whole heck of a lot..So it isn't a big deal.
And too if they are growing so fast, let em wear it, cause it'll end up at a gently used store and I'll buy it lol.
Dodge