I'm desperate for a mod that prevents the youths of Sims 3 to change as much (well, at all, really) as they do when they age into adults. They look awful. I want to use the storytelling mode and keep a normal amount of days to live for my sims but everybody in my neighbourhood gets adult and ugly before I have had time to use them for my game plan.

Is there an easy way to fix this? Are there a mod like this already somewhere?
Otherwise; Please, please help me create something like this!!

I'm Miranda here and mira_moone on ModTheSims.