Works not only is Bayonetta nude for game play, but also for cut scenes.
To have access to this mod, first, you must finish the game on Normal difficulty to obtain the Mirror (Item) at the Rodin store and unlock the costume purchase option.
The original mod was made years ago, so I remade this one based on the original vanilla Bayonetta skin, just removing some of her hair and improving the lightning to be available and look better during the cutscenes. Also I omited some details like the chains and gloves while it's active.
1. Add the "pl0000.dat" file (Inside the "Bayonetta/data/pl" folder.) Just copy and paste the folder.
2. Go to the "No Intro" folder. Copy and paste the "B_US_0000.sfd" and "PlatinumGames.sfd" files to the "Bayonetta\Steam\steamapps\common\Bayonetta\data\movie" folder. Overwrite the original ones.
3. Launch the game and the mod is aimed for the first costume.
(You may change the costume slot by replacing the "pl0000.dat" file for the one called "pl002d.dat" and it will replace the Various A Costume instead.)