We bundled the size charts in here.
For children we have a unisex based size chart from NB-7Y. After size 7Y, we make a split into in the pink chart (7Y-14Y, Adult) and petrol chart (7Y-16Y, Adult).
The pink chart has narrower shoulders, smaller waists and hips. The petrol chart based patterns will have for e.g. broader shoulders, smaller hips.
We made a “how to measure” blog.