Awesome, thanks again! Really love the mod and appreciate the work!
Updated for Dragonborn and Dawnguard.
I haven't thoroughly tested those DLCs yet. My first run through the cultists that start the quest for DB didn't have heads, but I fixed that. Let me know if you see any issues.
Any addon that is adding items that are not from standard skyrim will not be effected by this addon. So if you are using a lingerie mod or something, you'll need to disable that for this to work. Also if you have a costume like the school girl outfit my PC is wearing that includes panties, those will not be removed unless you unequip the item that provides the panties.
This also only effects default skyrim costumes.
Hope that explanation helps.
EDIT: I don't use SOS for the naked guys, I use FavoredSoulMeshes. IIRC SOS has a "package/print" feature for underwear, but I do believe the underwear can be disabled in the SOS configuration. As I said, I don't use that add-on, so I'm not familiar with how it works.