Saint John Chrysostom instructed women of all times about dress when in the fourth century he declared:
"You carry your snare everywhere and spread your nets in all places. You allege that you never invited others to sin. You did not, indeed, by your words, but you have done so by your dress and your deportment. ... When you have made another sin in his heart, how can you be innocent? Tell me, whom does this world condemn? Whom do judges punish? Those who drink poison or those who prepare it and administer the fatal potion? You have prepared the abominable cup, you have given the death dealing drink, and you are more criminal than are those who poison the body; you murder not the body but the soul. And it is not to enemies you do this, nor are you urged on by any imaginary necessity, nor provoked by injury, but out of foolish vanity and pride."
Saint Matthew (5:27-28) records the very words of Our Lord.
You have heard that it was said to the ancients, "Thou shalt not commit adultery." But I say to you that anyone who so much as looks with lust at a woman has already committed adultery with her in his heart.
"How beautiful then is modesty and what a gem among virtues it is."