portrait_religious_high_trigger

portrait_religious_high_trigger = {
	exists = this
	OR = {
		has_character_flag = need_priest_outfit
		is_theocratic_lessee = yes
		AND = {
			exists = primary_title # Check exists = primary_title instead of is_ruler, as dead characters aren't rulers
			government_has_flag = government_is_theocracy
		}
		AND = {
			has_council_position = councillor_court_chaplain
			liege = {
				NAND = {
					highest_held_title_tier >= tier_hegemony
					government_has_flag = government_is_celestial
				}
			}
		}
		# Ordained clerics dress as priests, unless they rise to lay rule
		AND = {
			portrait_has_trait_trigger = { TRAIT = cleric }
			OR = {
				is_ruler = no
				pam_is_clergy_ruler_trigger = yes
			}
		}
	}
	NOT = {
		rite = {
			rite_has_parameter = vows_of_poverty_active
		}
	}
}

As written in game/common/scripted_triggers/00_clothing_triggers.txt.