St. Jean Vianney:
"....Now even if there is no one present at all, you should not do this. Should you not respect the presence of their Guardian Angels? It is the same thing when you are feeding them. Should any Christian mother allow her breasts to remain exposed? And even if they are covered, should she not turn aside to some place where there is no one else? Then there are others who, under the pretext of being foster-nurses, are continually only half-covered. This is very disgusting. It is enough to make even the pagans blush. People are compelled to avoid their company in order not to expose themselves to evil thoughts.
But, you will say to me, even if everyone is around, we must feed our children and change their diapers when they cry! And I shall tell you that when they cry, you ought to do everything you possibly can to quieten them but that it is a far better thing to let them cry a little than to offend God. Alas! How many mothers are the cause of evil glances, of bad thoughts, of immodest touches! Tell me, are these the Christian mothers who should be so reserved? Oh, dear God! What judgment should they expect? "