While we're on the subject of what to wear for church and such, I don't think it's always as simple as "mind your own salvation and don't correct other people's behavior". Sometimes it's one's duty to admonish one's neighbor, not in order to judge, but in order to avoid scandal and help your brother know the right way. Minding one's business is the right overall principle, but sometimes one's business does overlap with others'.
I'm not saying this to argue that you should go out of your way to scold everyone who turns up to church in shorts or miniskirt, but that one shouldn't also think the worst of those who do feel the need to say something about it. Don't we want our churches to be well ordered?
I"m conflicted about this, based on personal experiences. As a kid in the 70's, my father, for whatever reason, felt he was making some sort of statement by how we dressed. We listened to Janis Joplin, rode around in a VW Bug and picked up many of the hitchhiking college students that were roaming the country at the time. So, we would go to Mass dressed like hippies. I had long, blonde hippie-like hair, and wore jean bell bottoms and flannel jackets, and I remember the looks of contempt when we walked into church like this. I always liked going to my ethnic grandparents and being with them in their church, with my grandpa in his suit and my grandma in her nice, stylish clothes. But, that's not how my father wanted things in our home. He felt he was being more "real" and the people who dressed up were "fake", for reasons beyond the scope of this thread. I was just a kid and had no choice in the matter. I don't think it was fair for people to judge me, they didn't know what was in my heart or my situation.
Later as an adult I attended a very conservative Roman Catholic church and I wore dresses every Sunday. But I still got judged. Why? Well, one reason is I like to get to church early and pray in the quietness of the church. Afterwards, when others would stay to pray before the Blessed Sacrament, I would leave, because I had already spent time in solitude and prayer *before* Mass. The fact that I left I right after Mass was noted by the group I was hanging out with at the time. Also, when everyone else was making a St. Louis Montfort consecration (A Roman Catholic thing, definitely not an Orthodox thing!) I didn't take part because I just wasn't "feeling it", and I wasn't going to do it just to fit into a particular group. Again, that was noted and I wasn't considered Roman Catholic enough. No matter that I wore nice clothes to Mass!
And, a bit later when I lost my job to corporate downsizing and decided to change careers and go to Nursing school, I had lost weight and couldn't fit into my nicer clothes any more. But, I couldn't afford new ones, since I had to use my savings to pay for my school tuition and my house mortgage and my living expenses. Should I have been admonished by someone for showing up at church in the clothes I had, or should I have stayed home to avoid admonishment?
Based on my own experiences, I think it's best to just mind ones own business. I understand some people dress inappropriately for church, but unless it is really causing a disturbance, maybe it is best to just pray for the person and seek God's intervention in his or her life?
