Most religions have one or two unusual practices or devices but occasionally you find one which is just completely weird. This list contains ten of the more unusual things found in modern religions.
In some denominations of the Latter Day Saint movement, the temple garment (or the Garment of the Holy Priesthood, or informally, the garment or garments) is a set of sacred underclothing worn by adult adherents who have taken part in a ritual ceremony known as washing and anointing ordinance, usually in a temple as part of the Endowment ceremony. Adherents consider them to be sacred and may be offended by public discussion of the garments. Anti-Mormon activists have publicly displayed or defaced temple garments to show their opposition to the LDS Church.
That is what is written in an article about Morman undergarments. Can you please explain to us if it is true that Mormon's wear special holy underwear and if so, why?
I guess if we can learn about typesetting on FR (CBS scandal) we can learn about religious underwear also. Since you brought up the subject of religion, we might as well be edified on this one.