Did Jesus wear religious vestments?
Seems to me that John the Baptist wore *unworldly* garments but I don't think camel's hair would thrill a lot of those already accustomed to the finer type.
"It was only after his death that his secretary, Macchi, would reveal that the Pope (Paul VI) often wore a hair shirt and a belt rough with knots that dug into his skin, to mortify the flesh."
"There was the Angelus at the window. I didnt want to appear on the third floor, where Pope Pius and John had appeared. I would have perhaps dropped this unique dialogue with St. Peters Square, but it was full of people, faithful elderly folk, who waited - an immense and moving spectacle. But what is this great need to see a Man? We have become a spectacle! It is a sign, a symbol. No, not for us, Lord!"
I understand that Pope St. JPII also was known to wear a hair shirt during his healthier days.