I can't figure out how to activate the nude render, but I've unlocked all the info for a couple of the characters (at least I think, I've gotten birthday, age, height, weight, and measurements).
When you get the height and weight you will get a regular render of them in their clothes. Then when you get the other measurements you will get the nude version which is the nude render
Gotcha! I assumed it would be something which could be viewed within the menu (like the costume options on each individual character page), but that makes sense.
