Include "Age customization option", like how with the transgender one.

I think they would have to make all of it alerted for children. That would be an extensive job. They could odd more diversity in kids clothing. Like give the an 'old timey' style, 'hip' style, 'edgy modern' style, ect. Having little kids walking around in grandpa and grandpa's childhood clothes would be adorable. Or little kids mimicking their parents style but still have that child feel.