Thanks - after following the first part of your instructions the Hongmoon outfit was invisible. Thanks again and great work by the modders!
How to combine both Mods
If you want to see how your character will look while playing the game whilst in character creation you should first install THIS mod as described above into the
Blade & Soul\BnS\contents\Local\NCWEST\ENGLISH\CookedPC\mod
folder (creating the 'mod' folder if it doesn't exist). Then copy the files from the other nude mod for the underwear linked here:
Blade and Soul - Nude Mods (basebody upk's)[NA/EU] | Undertow
into the same
Blade & Soul\BnS\contents\Local\NCWEST\ENGLISH\CookedPC\mod
folder and NOT overwrite any similar files.
This allows you to have both the underwear and Hongmoon outfit nude. As a result you can see what your character will look like nude during character creation without having to swap mod files every time.