The early Christians were Jews and the early clergy dressed like Jewish priests. But better yet why not include Eastern Orthodox Catholics, and the Orthodox Church. They’ve been wearing vestments for the last 2,000 years. And while you at why don’t you ask your protestant brother Anglicans and Lutherans why they wear vestments.
There’s nothing unscriptural about vestments. God commanded that they be used in the Old Testament. Look at Exodus 28:2:
For your brother Aaron you will make sacred vestments to give dignity and magnificence. You will instruct all the skilled men, whom I have endowed with skill, to make Aaron’s vestments for his consecration to my priesthood. These are the vestments which they must make: a pectoral, an ephod, a robe, an embroidered tunic, a turban, and a belt. They must make sacred vestments for your brother Aaron and his sons, for them to be priests in my service. They will use gold and violet material, red-purple and crimson, and finely woven linen.
“For your brother Aaron you will make sacred vestments...”
The veil was torn in two. The OLD Covenant system of priests and sacrifices was done away with. Same with the fancy clothing.
The only reason that practice started up again in the early Church was the same reason that the televangelists carry on the way they do: the love of attention, money and power.
Jesus came as a Servant Who washed feet. Anyone not following His humble example isn’t listening.