standard dress shirt but has a standing black collar that is sewn to accommodate a white cloth or soft plastic insert, leaving a small white square at the base of the throat. Neckband: A collarless shirt (similar to a banded collar shirt) tailored to accommodate a strip of linen or plastic that, when worn over the shirt, creates a standing white collar that rings the neck. This detachable collar is fastened with collar stays or buttons. These shirts and detachable collars were originally intended to be worn underneath a waistcoat, rabat, or cassock. Today these shirts are almost invariably black poly-cotton, but when worn under a waistcoat or rabat are usually white and made of a higher quality oxford cotton weave. Clerical waistcoat or rabat: Clerical waistcoats or rabats are the most traditional and formal item of clerical costume. They are almost always black and are made of worsted wool. Clerical waistcoats generally sport silk backing. They are worn over a neckband shirt and a detachable collar to create a cassock-like appearance about the neck. Unlike the waistcoats that accompany suits, they button all the way to the collar. The rabat is a late innovation, and exactly mirrors the clerical waistcoat, except that it is backless. Eastern Christianity In the Eastern Catholic Churches and Eastern Orthodox Churches a useful distinction between liturgical vestments and clerical clothing is that vestments are required to be blessed before being worn. Conversely, clerical clothing is not, and is regarded as daily wear. Inner cassock: The inner cassock (or simply, cassock) is a floor-length garment, usually black, worn by all clergy members, monastics, and seminarians. Outer cassock: Called a () or , the outer cassock is a large flowing garment worn over the inner cassock by bishops, priests, deacons, and monastics. : A soft-sided cap worn by monastics or awarded to clergy as a mark of honor. : A stiff hat worn by monastics or awarded to clergy as a mark of honor. : A veil worn either by nuns, either alone or with a . : A veil extending over the back, worn with the by all monastics and bishops. : A with an permanently attached; more common in the Russian tradition. Eastern Orthodox examples Married priests can wear an or when not celebrating Liturgy and may opt to wear the more informal over the more formal . They may also wear a vest