My son is almost 4.
Last time I measured him he was 107.5cm. This was December iirc.
Today he is wearing aged 5 trousers - for 110cm.
I suppose he could have grown 2.5cm since December but that makes him as tall as a five year old.
Tis costing a fortune in clothes as he is growing out of some after only a few wears. As aged 5-6 or aged 6 are too long.
Not sure of point of post, I guess I am wondering if anyone else has the same trouble.