There's a lifestyle brand that does this. Bit unsure of the name right now. Also if you use the Style Influencer Career there's something similar that makes other Sims wear what your Sims wear.
It's a feature :D
But does that include the reaper? Because even the reaper when he appears sometimes wears my sim's clothes. Also I don't have that fame perk and don't have my sim working in the style influencer career. But I'm glad at least that it's not my game being broken.
I don't have that personal style brand fame perk or whatever but could it just be that its because my sim has level 5 fame? I removed my sim from the spotlight and am not seeing any randoms wearing my sims clothing anymore and its not any clothing in particular as another 5 star famous sim also has the perk and different clothing and the same thing happens. I got grim to appear a bunch (i clearly don't play the sims in the way it was meant to be played if you saw my list of mods) and he was wearing his regular reaper robe so that may have fixed it or be a solution of sorts? None of my mods directly affect clothing (as far as I can tell anyway) so I don't see how it could be the mods.
Could you try going back to where they still had the clothing and remove all mods and see if they go back to normal ? For testing ?
