3 Bible Verses about Church Dress Code

and I would have the women dress becomingly, with modesty and self-control, not with plaited hair or gold or pearls or costly clothes, but--as befits women making a claim to godliness--with the ornament of good works.

My brethren, you must not make distinctions between one man and another while you are striving to maintain faith in the Lord Jesus Christ, who is our glory. For suppose a man comes into one of your meetings wearing gold rings and fine clothes, and there also comes in a poor man wearing shabby clothes, and you pay court to the one who wears the fine clothes, and say, "Sit here; this is a good place;" while to the poor man you say, "Stand there, or sit on the floor at my feet;"read more.
is it not plain that in your hearts you have little faith, seeing that you have become judges full of wrong thoughts?

Married women, in the same way, be submissive to your husbands, so that even if some of them disbelieve the Message, they may, apart from the Message, be won over by the daily life of their wives, after watching your daily life-- so full of reverence, and so blameless! Your adornment ought not to be a merely outward thing--one of plaiting the hair, putting on jewelry, or wearing beautiful dresses.read more.
Instead of that, it should be a new nature within--the imperishable ornament of a gentle and peaceful spirit, which is indeed precious in the sight of God. For in ancient times also this was the way the holy women who set their hopes upon God used to adorn themselves, being submissive to their husbands.