It seems that if you have an outfit on and preview a piece of armor like hat, gloves, boots, etc. Then preview a pair of pants and clear the preview of JUST the pants, your poor character will be partly nude.
If you try the same but with a shirt, it reverts to the outfit and you’ll need to clear the entire preview to fix.
I have pics but I’m not sure if it would be appropriate to post them here. >.<