Joseph- they are doing it because Hashem made women that they have a very deep desire to to be desired to be wanted and to be loved. True they aren’t going to really get what they really want. But this is how Hahshem made women. This should be used for the husband but there is a yetzer horah. He changes or focus and makes excuses and justifications. The girls look in the mirror for half an hour at every part and see that everything is just perfect. Try want to be looked at.
Likewise Hashem made men that they want to look etc. This too is to be used in marriage and that’s is how it should be and is good when used properly. But again the yetzer horah tries to get men to misuse this.
Anyone who does an aveira is overcome by a ruach shtus. The yetzer provides all the excuses and justifications. Oh this reberzen wears this type of thing. Oh these 6inch heals are so comfortable. Tight is so much more comfortable so what if I have to take little steps bc I can’t move my legs.
A great speaker makes his speech look like he is just talking off the top of his head. He is able to.do.this bc he practiced for hours. You don’t look dressed to kill by accident. It took hours of shopping and thinking and comparing to get it just right.