I have two 8 year old DDs, both tall for their age (height of an average 10 year old) and slim. I noticed one started getting smelly armpits a couple of months ago and I recently got her some child friendly first roll on. In the last week I have noticed my other dd also getting smelly armpits (neither smell in a bad way, just to add). I am surprised as I presumed (obviously wrongly) that this wouldn't happen for another couple of years.
I know this varies greatly among children but is this early or normal?