This is Paul to the Corinthians:
"For though I am free from all men, I have made myself a servant to all, that I might win the more; 20 and to the Jews I became as a Jew, that I might win Jews; to those who are under the law, as under the law, that I might win those who are under the law; 21 to those who are without law, as without law (not being without law toward God, but under law toward Christ), that I might win those who are without law; 22 to the weak I became as weak, that I might win the weak. I have become all things to all men, that I might by all means save some. 23 Now this I do for the gospel’s sake, that I may be partaker of it with you."
How will the people receive you? If they will receive you more readily if you wear a suit jacket, wear a suit jacket. If jeans, wear jeans. Etc. Although we have freedom from the traditions of men we are sent to men as ambassadors. And, if as ambassadors, then we are free to take part in their traditions as long as their traditions are not sin.
"Should we wear this or that?" is a question from a child. To them, I say "Wear what your conscience tells you." Knowing to whom you are sent (only those with wisdom are sent) settles the matter before asking: wear what the people expect. The exception is "What the Lord shows you directly."
I knew two men who were sent by God to people in South Africa. Although apartheid was illegal then it was still fresh in the traditions of the people (You can set the people free but they can remain slaves in their thinking and, so, remain slaves in their mannerisms.) One man was black and the other was a white man, both from the United States.
Although the black man could carry his own luggage, he asked the white man to do so. Since they were friends and believers, both men knew the reason: in South Africa seeing a white man serve a black man did violence against the mindset of apartheid that held the black people in bondage. The men who were sent knew they represented the Kingdom of God and not any tradition of man. This simple act made the people all the more ready to hear the message from the men who were sent.