I am about to order a snowsuit/pram for LO from a store in The UK and the size says "100" which is referring to 18m-24m.
I know my clothing from overseas tends to run much smaller than US sizes, so I am wondering if that is the same for baby clothing?
My son is 15m, but can fit 18m clothing and can certainly grow into 24m by the end of the winter. That is assuming their chart is correct in saying that "100" =18-24m. I have no idea what 100 is measuring.