Based mainly on my own experiences while working with children’s clothing for over six years, this post is about sizing on my patterns for children: why do I use height instead of age?
Since children grow with absolutely no logic and definitely not after any average sizing standards, I use the height for sizing. That is the common way of marking clothing sizes for children here in Finland. – It is quite ridiculous to mark sizes by age since it’s impossible for all the children to have reached an average height by a certain age. It’s really rare that a child would fit the average size tables. Especially here in Finland it’s more of a rule than an exception that the children are much taller than on the average size tables. E.g. I’ve met 130 cm tall 6 year old children who should according to size tables be about 8-9 years old by their height!