Put the "Sangres Casual Business Shirt" in your Mod_Override folder which is located in here, if not then simply create one.

Location:
C:\Program Files (x86)\Steam\steamapps\common\PAYDAY 2\assets\mod_overrides\

or

C:\Program Files\Steam\steamapps\common\PAYDAY 2\assets\mod_overrides\
Thank you and enjoy! -Matthelzor

P.S, If you want his moustache back then please remove the following file "npc_criminal_max_hair_df" which is located in:

units > pd2_dlc_max > characters > npc_criminals_max and remove