This will replace T-Shirt file. So backup your original file before you replace it.

INSTRUCTIONS:

1. Run Open IV
2. Go to Grand Theft Auto V\x64v.rpf\models\cdimages\streamedpeds_players.rpf\player_one\
3. Press Edit Mode button in OpenIV and replace "uppr_diff_004_d_uni.ytd" with the file in the .zip
4. Press again Edit Mode to disable it and then you can play the game.

Known issue:
Darker hands.
Apparently for no reason... I'll work on that as soon as possible

Update 1: Black hands "bug" fixed
Update 2: Added Italian version ;)

If you have any requests, feel free to contact me