Here’s a nude mod for male sith apprentice. He appears without his clothes, completely nude in Star Wars: Knights of the Old Republic. Credits: rab2501 and Ninivekha.
How to Install Star Wars: Knights of the Old Republic Naked Sith Apprentice
Copy all the files from the “nude sith apprentice” folder to the “override” folder of your game. Overwrite if it tells you to do.