When I attend Mass, I wear a shirt, tie, and jacket, which most men who attend Mass at my chapel do. However, at other times during the week when I stop by the chapel for a briefer time (Confession, private prayer, etc.), I will wear whatever I happen to have on that day. It is never immodest, but is often casual (jeans, long-sleeve casual shirt, sneakers, etc.). Is this inappropriate? There have been comments from others.