The most preposterous thing Muslim girls do (in the western world) The newfangled style, wearing Hijab (Masha'allah ) at the same time they are wearing skinny jeans. They presume they are cover, their mind is preoccupied that they are dressed probably according to Islam. Most of them argue, "I'm wearing hijab my hair is not showing, plus my bottom is covered. so what".
Yes, The most sinful awrah is the hair(according to female). The common misconception is most people are not familiar with the word "Hijab" The word itself comes from the Arabic word "hajaba" meaning to conceal or hide from view. Hijab is the modest covering of the HEAD to TOE
In Surah Nur
"And say to the faithful women to lower their gazes, and to guard their private parts, and not to display their beauty except what is apparent of it, and to extend their headcoverings (khimars) to cover their bosoms (jaybs), and not to display their beauty except to their husbands, or their fathers, or their husband's fathers, or their sons, or their husband's sons, or their brothers, or their brothers' sons, or their sisters' sons, or their womenfolk, or what their right hands rule (slaves), or the followers from the men who do not feel sexual desire, or the small children to whom the nakedness of women is not apparent, and not to strike their feet (on the ground) so as to make known what they hide of their adornments. And turn in repentance to Allah together, O you the faithful, in order that you are successful."
Plus They come to the masjid of Allah swt dressed like that . Yet they have the guts to talk about how embarrassed they were today or yesterday when such and such had occurred. They are disconcerted on the eyes of the society. But they stand in front of their creator looking like that and not feel ashamed. If they were to have an interview for a job. There is no doubt whether or not they would dress professional to please interviewee. Today most of us don't strive to please our creator the Most Gracious, Most Merciful. Allah swt is qafuru'rahiim" ( Most Forgiving). But we are weak and the shaydaan is sure keeping the promise that he made to misguide the ummah of Aden. (as)