Ambrose of Milan

Let us then hold fast modesty and that moderation which adds to the beauty of the whole of life. For it is no light thing in every matter to preserve due measure and to bring about order, wherein that is plainly conspicuous which we call "decorum," or what is seemly. This is so closely connected with what is virtuous that one cannot separate the two.… This seemliness which we offer to God we may believe to be far better than other things. It befits also a woman to pray in an orderly dress, but it is especially fitting to her to pray humbly covered and to pray giving promise of purity together with wholesome conversation.