Joseph Shaw of the LMS Chairman blog is currently running a series on traditionalists and their fashion outlook in reaction to Tracey Rowland's comments that the old Mass can seen culturally inaccessible to outsiders because, essentially, many traditionalists dress as though the year is 1952. Generally I support reverent, dignified dress at Mass, but wish people would keep the rules few. The local FSSP church has a sign with bullet point list of dress requirements. The neckline on women's tops cannot go more than the width of two fingers below the base of the neck. The Ukrainian parish I attend has one guideline on its website: Dress as though you are entering a house of God.
Perhaps the best anecdote about traditionalists and modesty, which is more a frame of mind than any particular article of clothing, comes from the fellow who comments here as Lord of Bollocks. His mother, during her days with the FSSPX, was pregnant during a Texas summer and did not wear a veil lest she pass out from dehydration and heat. After several lectures from the priest and parishioners about how seductive female hair is to men and the temptation men endure during Mass on account of un-veiled women, she found the perfect solution. She buzz-cut her hair off.