St. John Vianney
“One must be suitably clothed, not richly clad, but respectably. It is not becoming in young people to make a display of vanity in going to receive a God humiliated and despised. My God! My God! what a contradiction: they seem to make no difference between the Holy Table and a ball or dance. It is also disrespectful to Jesus Christ to communicate with one’s clothes soiled or torn. See that they are clean. Change your linen if you can. But labourers should not hesitate to come to the Holy Table in their working clothes if they are in a hurry, and if they are obliged to be at work immediately after receiving Holy Communion. According to the thought of a Father of the Church, what Christ desires is not garments of silk, embroidered with gold, but souls of gold.”
Source: St. John Vianney, The Meditations of the Curé D’Ars