Are you sure you just haven't checked to see if they have alternative outfits?
In CAS, you can set up to five additional outfits per category by clicking the little arrow at the top of the category icon.
Also, if you have Seasons, check to see if they aren't just switching automatically into their hot or cold weather outfit when the outside temperature is hot or cold.
I'm having the same problem, I tried repairing the game and I even took out all my mods and added them in slowly but nothing seems to fix this error.
Community Manager
