(It should cover all the body apart from whatever has been exempted).
Allaah says (interpretation of the meaning):
“O Prophet! Tell your wives and your daughters and the women of the believers to draw their cloaks (veils) all over their bodies (i.e. screen themselves completely except the eyes or one eye to see the way). That will be better, that they should be known (as free respectable women) so as not to be annoyed. And Allaah is Ever Oft‑Forgiving, Most Merciful” [al-Ahzaab 33:59] This aayah clearly states that it is obligatory to cover all of a woman’s beauty and adornments and not to display any part of that before non-mahram men (“strangers”) except for whatever appears unintentionally, in which case there will be no sin on them if they hasten to cover it up.
(it should not be an adornment in and of itself).
Allaah says (interpretation of the meaning): “… and not to show off their adornment…” [al-Noor 24:31]. The general meaning of this phrase includes the outer garment, because if it is decorated it will attract men’s attention to her.
(It should be thick and not transparent or “see-thru”)
– because it cannot cover properly otherwise. Transparent or see-thru clothing makes a woman more tempting and beautiful.\
(It should be loose, not tight so that it describes any part of the body).
The purpose of clothing is to prevent fitnah (temptation), and this can only be achieved if clothes are wide and loose.Tight clothes, even if they conceal the colour of the skin, still describe the size and shape of the body or part of it, and create a vivid image in the minds of men.
(It should not be perfumed with bakhoor or fragrance)
There are many ahaadeeth which forbid women to wear perfume when they go out of their houses.
Abu Moosa al-Ash’ari said: the Messenger of Allaah (peace and blessings of Allaah be upon him) said: “Any woman who puts on perfume then passes by people so that they can smell her fragrance, is an adulteress.”
(It should not resemble the clothing of men)
Abu Hurayrah said: “The Messenger of Allaah (peace and blessings of Allaah be upon him) cursed the man who wears women’s clothes, and the woman who wears men’s clothes.”
(It should not resemble the dress of kaafir women).
It is stated in sharee’ah that Muslims, men and women alike, should not resemble or imitate the kuffaar with regard to worship, festivals or clothing that is specific to them.
(It should not be a garment of fame and vanity).
Ibn ‘Umar (may Allah be pleased with him) said: “The Messenger of Allaah (peace and blessings of Allaah be upon him) said: ‘Whoever wears a garment of fame and vanity in this world, Allaah will clothe him in a garment of humiliation on the Day of Resurrection, then He will cause Fire to flame up around him.’”
(Hijaab al-Mar’ah al-Muslimah, p. 54-67).