When changing the appearance of your Jomsviking, or even when she's walking around in Raventhorpe, I get visual glitches.
What I did was: Hide the default torso, give her my Raven Clan Breeches (which are mythic visually).
Then around the waist you get holes in her pants. I have the same setup for my Eivor, and it seems those holes are normally blocked by Eivor's belt buckle.But she doesn't have that. When she walks around in camp, and you stand behind her, moving the camera around, sometimes a part of the pants disappears and you see her nude buttoms with some dark black in between the buttcheeks.
See my screenshots below.