We REALLY need these random generated townie outfits to be fixed. Hear me out, there's a reason I think it might be a bug. This issue happens to my active sims too, sims that I've put a lot of work i...
Ideas
I don't know if this is relevant, but... If you have HSY Thrifty Tea lots can generate some pretty sensational outfits. You don't need to visit the lots to see this, any Sim (your's or NPC's) generated in the area can be effected. These outfits can persist, but - like situational outfits - they usually work their way out. I play rotationally and sometimes find my Sims dressed in wild outfits. I figure they're just being "Trendi" - Sorry.