Board Thread:General Discussion/@comment-24135447-20140409122751/@comment-1188343-20150218125419

Using the Wabbajack to level up followers may cause them to come back from their transformations without any clothes equipped, and they'll walk around in their underwear. No joke! If you like the armor you gave them, be sure to take it before you use the Wabbajack on them (And save too, beforehand. You might turn them into a pile of gold coins.), as them respawning appears to reset their "apparel" inventory section. I know this from experience, Erandur walked around in his underwear and boots like nothing happened. Time to reload the save!