There are different mods for this game. Replace the original files in the game folders with the ones from the zip-files.
Claire Full Nude Mod + Nude Rodeo (by Maliwei 777)
Moira Nude Ninja (by beelzebub2063)
Moira Topless Sexy Ninja (by beelzebub2063)
Alex Wesker Nude Hairy, Campaign (by Maliwei 777)
Moira Nude Mod – Copy of Claire’s body (by Maliwei 777)