5 The woman shall not wear that which pertaineth unto a man, neither shall a man put on a woman's garment: for all that do so are abomination unto the LORD thy God.
If you consider it truly, there is an incongruity that nature itself abhors. For why, man, do you not want to appear to be what you were born as? Why do you put on a strange guise? Why do you ape a woman? Or why do you, woman, ape a man? Nature arrays each sex with its own garments. Men and women have different customs, different complexions, gestures and gaits, different sorts of strength, different voices.
[AD 397] Ambrose of Milan on Deuteronomy 22:5