My FH is from a small town thats very country - think every Texas sterotype, and thats it. We are getting married in Houston and most of his friends and family are planning on coming to the wedding. After attending Christmas Eve services at their church, I am very concerned about what they are wearing to the wedding. We are getting married at the Catholic church, I've grown up in my entire life and I just not acustom to seeing people dress the way they did for church, especially Christmas Eve - wrinkled t-shirts, cargo shorts, and flip flops. Yes, they were people who are apparently on our guest list. Adding to the concern, I saw the pictures from his sister's wedding 3 years ago, it was very much the same style and dress. I know I can't control how people dress, but I was raised to dress appropiately for church out of respect and I think I might have a heart attack if someone shows up in shorts or a wrinkled t-shirt. My FMIL has even joked that semi-formal to them means 1 hole, not 2 hole. Anyone had/having a similar issue? How can we stress appropriate attire without sounding uptight or rude? Obviously, we'll put semi-formal on the invitation, but could I list out examples on our website or something? I don't mean to be offensive, but I seriously don't think they understand how upsetting snd embarassing that would be to me on my wedding day.