Since all the CC I’ve downloaded for The Sims 4 so far has been just mods, I went looking for some nice stuff and downloaded these:

Men Underwear v6: thong with 16 recolours by 333EvE333

Men Underwear v5: new underwear with 18 recolours by 333EvE333

Bulge mod with three versions by LumiaLover Sims I settled for the medium version for now.

My favourite sim looks really nice now, if you know what I mean.