The only idea of what a "harlot" looks like is based on our social norm that we've created today. Don't you understand that Adam and Eve were naked? There was never meant to be this sense of shame that we all have, but this is a perfect example of Christians feeling as if the more "righteous" thing to do is to cover up their skin; or do you not know that your righteous acts are like filthy pieces of cloth?
Isaiah 64:6
All of us have become like one who is unclean, and all our righteous acts are like filthy rags; we all shrivel up like a leaf, and like the wind our sins sweep us away.
The woman in this video is approaching Christianity from a moral performance, saying that if you dress more modestly it's going to please God and it's going to express yourself in the light that you are a more righteous and respectful person; or do you not know that to the corrupt mind nothing is pure?
Titus 1:15
To the pure, all things are pure, but to those who are corrupted and do not believe, nothing is pure. In fact, both their minds and consciences are corrupted.
Do you not know that the only thing you have on your side is faith?
Hebrews 11:6
And without faith it is impossible to please God, because anyone who comes to him must believe that he exists and that he rewards those who earnestly seek him.
I see these videos and it just screams a moral agenda. You do not need to convince a woman who is dressing provocatively to not dress the way that she is dressing, as all your are doing is imposing your "righteous" understanding onto them and giving them a law mentality that if they do something they will have a better standing in their "Christian walk" and I think it is absolutely ridiculous.
I don't care how another girl dresses because I am not going to look at her in that way. Christ has purified me, because of him I can see girls for their real beauty and not be absolutely caught up in thinking of them in some fallen reality. The woman in this video is coming from the corrupted mindset, assuming that men are going to defile their purity based on a dress sense that society has created as socially acceptable. I can tell you that to the corrupted, nothing is pure. Not even your most modest clothes, even those are corrupt to the impure. Your "righteous clothes" and "modest apparel" in order to please God are like filthy rags. You're stuck in a paradox because you're assessing things from a fallen reality.
Stop focusing on all the do's and don'ts and start focusing on Jesus. Let God put His laws in your mind and your heart, then see how you want to dress. Don't listen to some woman preaching her own "good, sound and holy" opinions on what is and isn't acceptable. That's not spiritual, because we're unspiritual beings. It's only by the Spirit that we live by faith.