Rename Models

[TheTarr2]

Is there a way to rename the models or save them as something OTHER than their username? I bring this up because I'd like to have 2 or 3 alternate outfits in the game, but I can't do that without them overwriting each other. (If I rename them, it turns all of their textures black. I don't know if I can fix this) If you can, can you please add a feature to have the model be named something else? (image is a concept for something like this)