Looking back at last Christmas's pics on my phone, I noticed that DS (21 months) has not outgrown the trousers (size 18mnths) he was in last year. They were on the big side then. He was 84cm tall on Xmas Eve and weighs about 2 stone. Haven't my growth chart handy so is this normal? Lots of his tops are too small now. OH is 6'3 and I'm 5'4. Is it true you get height from maternal side?