In recent days, the holy Tzaddik Rabbi Eliezer Berland shlit"a has been speaking about the importance of modesty. Below is a prayer that The Rav shlit"a wrote in recent days regarding modest dress:

Master of the World, Almighty—nothing You plan can be withheld from You—grant us the merit to walk with the greatest modesty, both the boys and the girls: that we should not open buttons, and not roll up sleeves; that we should not shorten skirts, and not expose knees; and that we should gather in all our hair, so that not even a single hair, Heaven forbid, should go out. And may we break and crush all smartphones and all “shi’umim.” And we too—the boys—should not go in pants that are tight or short. For in that very minute and second that we transgress in these matters, thousands of soldiers are killed, and thousands of civilians, and innocent, upright civilians are kidnapped; and human-dogs who walk on two legs—reincarnations of demons and children of the Satan—kill among us without mercy, day and night, at every moment and second, by the hundreds of thousands. For only Rebbe Nachman, Holy of Holies, can save the entire People of Israel in a time of distress, as it is said: “And it is a time of trouble for Yaakov, and from it he will be saved.” And only when we are included within the Sefirah of Kesser can we be saved—through the light of the Ein Sof that spreads through all the Ten Sefiros, the four worlds, and the five Partzufim, and reaches all the way to the end of the world of Asiyah—Asiyah within Asiyah. For all our avodah is to connect Asiyah within Asiyah with Atzilus within Atzilus, for this year we still have before us three hundred and eighty-three days to be included in the light of the Ein Sof. And in this merit, all the captives will return home, for the condition of the captives is worse than the condition of those who were murdered. And in the merit of the wondrous modesty that the boys and the girls will accept upon themselves, from now on no Jew will be killed, Heaven forbid, from now and forever; and we will merit to see the revelation of Moshiach ben David and the building of the Third Beis HaMikdash, speedily in our days, amen—forever, selah, and ever.