There has been many issues raised here that need to be addressed. I'll inshallah address the important ones.
Quranic Verses about Hijab:
“O you Children of Adam! We have bestowed on you raiment to cover your shame as well as to be an adornment to you. But the raiment of righteousness, that is the best. Such are among the Signs of Allah, that they may receive admonition.” (Quran 7:26)
“And say to the believing women that they should lower their gaze and guard their modesty; that they should not display their beauty and ornaments except what must ordinarily appear therof; that they should draw their veils over their bosoms and not display their beauty except to their husbands, their fathers, their husbands' fathers, their sons, their husbands' sons, their brothers, or their brothers' sons or their sisters' sons, or their women or the servants whom their right hands possess, or male servants free of physical needs, or small children who have no sense of the shame of sex, and that they should not strike their feet in order to draw attention to their hidden ornaments. And O you Believers, turn you all together towards Allah, that you may attain Bliss.” (Quran 24:31).
“O Prophet, tell your wives and your daughters and the women of the believers to draw their cloaks close round them (when they go abroad). That will be better, so that they may be recognised and not annoyed. Allah is ever Forgiving, Merciful.” (Quran 33:59)
Hadith about Hijab:
Hadith - Bukhari 1:148
The wives of the Prophet
used to go to Al-Manasi, a vast open place (near Baqia at Medina) to answer the call of nature at night. 'Umar used to say to the Prophet "Let your wives be veiled," but Allah's Apostle did not do so. One night Sauda bint Zam'a the wife of the Prophet went out at 'Isha' time and she was a tall lady. 'Umar addressed her and said, "I have recognized you, O Sauda." He said so, as he desired eagerly that the verses of Al-Hijab (the observing of veils by the Muslim women) may be revealed. So Allah revealed the verses of "Al-Hijab" (A complete body cover excluding the eyes).
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Hadith - Abu Dawud, Narrated Umm Salamah, Ummul Mu'minin[/FONT]
[FONT=Helvetica, Arial]When the verse "That they should cast their outer garments over their persons" was revealed, the women of Ansar came out as if they had crows over their heads by wearing outer garments.[/FONT]
The lower half of the hijab is a garment that does not show the woman's figure. Jeans and certain obvious garments do not meet this requirement.
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Hadith - Abu Dawud, Narrated Dihyah ibn Khalifah al-Kalbi[/FONT]
[FONT=Helvetica, Arial] The Apostle of Allah [/FONT]
[FONT=Helvetica, Arial]was brought some pieces of fine Egyptian linen and he gave me one and said: Divide it into two; cut one of the pieces into a shirt and give the other to your wife for veil. Then when he turned away, he said: And order your wife to wear a garment below it and not show her figure.[/FONT]
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And say to the believing women that they cast down their looks and guard their private parts and do not display their ornaments except what appears thereof, and let them wear their head-coverings over their bosoms, and not display their ornaments except to their husbands or their fathers, or the fathers of their husbands, or their sons, or the sons of their husbands, or their brothers, or their brothers' sons, or their sisters' sons, or their women, or those whom their right hands possess, or the male servants not having need (of women), or the children who have not attained knowledge of what is hidden of women; and let them not strike their feet so that what they hide of their ornaments may be known; and turn to Allah all of you, O believers! so that you may be successful. (Surah Nur: 31)
Rasulullah S.A.W. said, "A women who reveals her body or even wears tight fitting clothes won't come within 500 years of the smell of Jannah."
The Prophet (peace be upon him) said that the following type of women constitute one of the categories of the dwellers of Hell: "Those women who seem naked even when dressed and those who walk flirtingly and those who plait their heads like the humps of camels, thus inviting people's attention, will not enter Paradise nor will they smell its fragrance even though its fragrance can be smelt from a very long distance." (Muslim).
Conditions of Hijab
1. Proper hijab (concealment for the Muslim woman) dictates that the entire body must be covered, although the face and hands may be exposed. Some women choose to cover themselves further by means of a face veil and gloves, and this is perfectly fine.
2. The clothing must be long and loose-fitting so that the shape of the woman is not outlined in her garments. The preferred coverings include the jelbab and the abaya which are floor-length cloaks which come in various types of fabric and may be worn over a woman's regular house clothing. Pants are unacceptable unless they are worn underneath the outer garments.
3. Garments should not be transparent as to reveal the color of a woman's skin or to expose the hair or body in any way. With regards to the headscarf, it must cover all of the hair and be long enough to cover the woman's ears, neck and chest. Women should take care to ensure that the scarf is securely fastened, usually with pins, and that her hair is arranged so that it will not slip out of her scarf.
4. Colors and styles should be as plain as possible so that unnecessary attention is not drawn to the woman. In addition, the clothing should not be excessively rich and fancy in order to gain admiration nor excessively poor and ragged in order to gain sympathy. Modesty is the main goal.
5. Jewelry must not be displayed, and it is especially important that it does not make noise as a woman walks (an ankle-bracelet with bells, for example). Women in pre-Islamic Arabia used to wear such bracelets and stamp their feet in the markets in order to entice and attract men.
6. The dress should not resemble the garments of men, nor should it imitate the dress of non-Muslims.
7. Make-up (unless it is completely covered by a face-veil) and perfume are strictly prohibited for Muslim women when outdoors or in the presence of non-mahrem men.
8. A Muslim woman who wears hijab should also strive to make her actions consistent with her dress with regards to Islamic guidelines for speech, manners and behavior.
source
See more @
http://www.troid.org/articles/sisters/hijaab/conditions.htm
Hijab vs Khimar
"Khimaar comes from the word khamr, the root meaning of which is to cover. For example, the Prophet (peace and blessings of Allah be upon him) said: “Khammiru aaniyatakum (cover your vessels).” Everything that covers something else is called its khimaar. But in common usage khimaar has come to be used as a name for the garment with which a woman covers her head; in some cases this does not go against the linguistic meaning of khimaar. Some of the fuqahaa’ have defined it as that which covers the head, the temples and the neck. The difference between the hijaab and the khimaar is that the hijaab is something which covers all of a woman’s body, whilst the khimaar in general is something with which a woman covers her head."
Imam Abu Abdullah Qurtubi: "Women in those days used to cover their heads with the khimar, throwing its ends upon their backs. This left the neck and the upper part of the chest bare, along with the ears, in the
manner of the Christians. Then Allah commanded them to cover those parts with the khimar."
Imam Abu'l-Fida ibn Kathir: "'Draw their khumur to cover their bosoms' means that they should wear the khimar in such a way that they cover their chests so that they will be different from the women of the jahiliyyah who did not do that but would pass in front of men with their chests uncovered and with their necks, forelocks, hair and earrings uncovered."
More @ http://www.minhajsisters.com/home/articles/index.minhaj?id=10&e=1136245827
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Food for thought ... are today's sisters Muslimah or from the women of Jahiliyyah in their covering (exposing ears, neck, chest)?