In UPCI (and I could be incorrect) I believe they are not allowed to wear bathing suits, any kind of jewelry (cept a wedding band and thats not ok in some), have facial hair, wear shorts, and they have to wear suits to church, but I'm not entirely sure about all those. They are definitely not as stringent (in my opinion) as women's requirements but they do have some. I've only been to an apostolic church a handful of times. The last 3 times I wore jeans. They didn't like me very much with that. I was actually told the last time (from the pulpit) that if I didn't like the service, I could get out.