My son is 6 and has the child kilt from Got-Kilt.com (they had a booth at the Orlando Highland Games) - it's made in P-stan and is acrylic... cost us $20 and fits him well although a bit long (he has to wear it military style at the ribcage) and on the very tightest setting. I can't remember if we got him the 5-6yo or the 7-8yo kilt, but for $20 bucks...