What's the difference if a man wears earrings or rings on their fingers? It has nothing to do with what's in their heart and soul and I believe that's pretty much what God really cares about, don't you??
I think the BIBLE also says that we should "Judge not lest ye be judged." If a person shows up in Church, then I believe that he's there for a "GOOD" reason and I don't believe God will find fault with him for looking the best that he can to go visit God's house.