You can fit I to your Son's clothes!!
Master 12 is almost my height now and for a joke -he was not amused- I tried on his new hoodie....and it fitted lol.
I am now teasing him that I know whose wardrobe I will be raiding if I need a hoodie.
The look on his face was priceless. It seems at 12, boys loose their sense of humour:). On the upside he is rather pleased that he is almost "bigger" than me.