Just let it happen gradually.
If the preacher is preaching the Word, I don't care if he's wearing a suit or a pair of jeans.
Preach the Word!!
I think it is a function of culture. Less than 65% of american men own a suit.
If you make wearing a suit a requirement to attend, you automatically lose 35% of men who will not hear the truth of the gospel.
“If the preacher is preaching the Word, I don’t care if he’s wearing a suit or a pair of jeans.”
Some people think that Jesus wore a suit for the sermon on the mount!
The whole suit thing is an odd cultural thing