White Church Hat is a Head Armor/Attire in Bloodborne. It is part of White Church Set.
" Attire of special Church doctors.
These doctors are superiors to the black preventative hunters, and specialists in experimentally-backed blood ministration and the scourge of the beast.
They believe that medicine is not a means of treatment but rather a method for research. and that some knowledge can only be obtained by exposing oneself to sickness."
- Player notes