I wanna say a 13(child's 13) or the next size up, a 1.
Everyone is different!
Most likely a typical 4 yo girl will wear 9 1/2 to 10 size shoe.
There is no average shoe size for a 15 year old girl. Shoe size can vary and it depends on height.
It really just depends on the two-year old girl overall size and which country you live in. The shoe size in Mexico is different from the size in the USA, and so on.
About a size 231
The average shoe size for a 2 year old girl is a US size 8. This size is in Adult size.
size 1-5
The average shoe size for a 7 year old girl is around a size 2 to 3 in children's shoes. However, this can vary depending on individual growth and development.
three
Between size 8 and 9
usually about size 3 or 4.
Well, it depends on the girl. I'd say the approximate American shoe size would be a size 1 or a size 2. I'm not sure about any other country shoe sizes, though.