I will be order a kilt for my son to be (fiancée's son) to wear in the wedding. He's 12 and I think he's got a ways to grow (he's around 5'7 and wears size 12 US shoes). When measuring him for his kilt is there a way to plan for some growing room? I'd love for this to be a kilt he can wear for the rest of his life.

Thanks in advance for any advice