About dressing for church...those who have been born again in Christ Jesus will be led by the Spirit as to how to dress for church.
I remember reading a true story many years ago--I don't remember where--from a Christian man who worked in an office. One of his colleagues was a woman business executive. She wore her hair in a mannish style and her clothes looked mannish. She also acted in a forceful, mannish manner. No, she wasn't gay--but she thought she had to act and dress similar to a man to be taken seriously by the men she worked with. But the author shared his Christian faith with her, and over time, she came to believe in Jesus Christ as Lord and God and Savior. The author of this article noticed a gradual change with her, over the next few months after her conversion. She started growing out her hair a little, and wearing it in a more feminine style, wearing a little makeup, and more feminine clothes. She also started allowing men to hold doors open for her, pull chairs out for her, etc. Before this, she had always gotten indignant when men did that for her, since she thought it meant they thought she was too weak to do it herself. Never occurred to her they were doing it just to be nice.
One day, some months later, the author asked her how she liked having men hold open doors for her, pull out chairs for her, etc. With tears in her eyes, she exclaimed, "I love it!"
No one told her to change. No one. The indwelling HS did. HE changed her from the inside out. So, if people wearing pierced noses and tongues start going to a true Christian church, where the members don't make a deal out of their piercings, and these people come to confess Jesus Christ as Lord and God and Savior, then the HS will change them and help them decide if they should continue wearing these piercings. Of course, tattoos are another manner, since surgery is needed to get rid of those.