The phrase "religious garb" refers to clothing or attire that is worn by people of a particular religion as a symbol of their faith or as part of their religious tradition. Full definition
Not working certain days, wearing religious garb in inappropriate places (like the office), skipping school events that other students have to attend, etc.. (religion.blogs.cnn.com)
WASHINGTON — The Justice Department last week accused the Philadelphia school board and the Commonwealth of Pennsylvania of violating the religious rights of teachers by barring them from wearing religious garb while on the job. (edweek.org)
But in light of the proposed Quebec rules on what religious garb the province's public servants would no longer be allowed to wear on the job — Sikh turbans, Jewish kippas, Muslim hijabs, and large Christian crosses would all be banned — Kenney might have allowed himself to get a bit more worked up. (macleans.ca)