The custom dress looks really good up there, and according to Sacrosanctum Concilium (Constitution on the Sacred Liturgy); "22. 1. Regulation of the sacred liturgy depends solely on the authority of the Church, that is, on the Apostolic See and, as laws may determine, on the bishop. 2. In virtue of power conceded by the law, the regulation of the liturgy within certain defined limits belongs also to various kinds of competent territorial bodies of bishops legitimately established."
"According to the norm of Art. 22 of this Constitution, the territorial bodies of bishops are empowered to adapt such things to the needs and customs of their different regions; this applies especially to the materials and form of sacred furnishings and vestments."
INSTRUCTION Redemptionis Sacramentum On certain matters to be observed or to be avoided regarding the Most Holy Eucharist
"121. “The purpose of a variety of colour of the sacred vestments is to give effective expression even outwardly to the specific character of the mysteries of faith being celebrated and to a sense of Christian life’s passage through the course of the liturgical year”.[210] On the other hand, the variety “of offices in the celebration of the Eucharist is shown outwardly by the diversity of sacred vestments. In fact, these “sacred vestments should also contribute to the beauty of the sacred action itself”" "[123.] “The vestment proper to the Priest celebrant at Mass, and in other sacred actions directly connected with Mass unless otherwise indicated, is the chasuble, worn over the alb and stole.”"
General Instruction of the Roman Missal
"342. Regarding the design of sacred vestments, Conferences of Bishops may determine and propose to the Apostolic See adaptations that correspond to the needs and the usages of their regions.[138]
343. In addition to the traditional materials, natural fabrics proper to each region may be used for making sacred vestments; artificial fabrics that are in keeping with the dignity of the sacred action and the person wearing them may also be used. The Conference of Bishops will be the judge in this matter.[139]"
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Comments
"22. 1. Regulation of the sacred liturgy depends solely on the authority of the Church, that is, on the Apostolic See and, as laws may determine, on the bishop.
2. In virtue of power conceded by the law, the regulation of the liturgy within certain defined limits belongs also to various kinds of competent territorial bodies of bishops legitimately established."
"According to the norm of Art. 22 of this Constitution, the territorial bodies of bishops are empowered to adapt such things to the needs and customs of their different regions; this applies especially to the materials and form of sacred furnishings and vestments."
INSTRUCTION
Redemptionis Sacramentum
On certain matters to be observed or to be avoided regarding the Most Holy Eucharist
"121. “The purpose of a variety of colour of the sacred vestments is to give effective expression even outwardly to the specific character of the mysteries of faith being celebrated and to a sense of Christian life’s passage through the course of the liturgical year”.[210] On the other hand, the variety “of offices in the celebration of the Eucharist is shown outwardly by the diversity of sacred vestments. In fact, these “sacred vestments should also contribute to the beauty of the sacred action itself”"
"[123.] “The vestment proper to the Priest celebrant at Mass, and in other sacred actions directly connected with Mass unless otherwise indicated, is the chasuble, worn over the alb and stole.”"
General Instruction of the Roman Missal
"342. Regarding the design of sacred vestments, Conferences of Bishops may determine and propose to the Apostolic See adaptations that correspond to the needs and the usages of their regions.[138]
343. In addition to the traditional materials, natural fabrics proper to each region may be used for making sacred vestments; artificial fabrics that are in keeping with the dignity of the sacred action and the person wearing them may also be used. The Conference of Bishops will be the judge in this matter.[139]"