I know after making the different body types for females, it would be a very long time since we had children, also considering the community will ask for males to have a chubby body as well, so instead, I propose a compromise. We can wait as long as needed, if you accomodate us a few t-shirts that show no breast bulges to portray kids who are younger than 13 and a few tight pants and short dresses that make the legs look less shapely like you’d see in a grown woman.
Examples:
It would look more like this
And less like this
And for the legs it would be more like this
Or this
And less like this