:salam2:
sister your suppposed to cover your legs to the ankle, not have the skirt 3/4 length. I found this article, inshAllah take a look.
http://www.missionislam.com/family/hijab.htm
1. The outer garment worn in public must cover all of the body except the face and hands.
Surat an-Noor, ayah 31 (quoted above) contains a clear command that a woman's natural beauty and her adornment are to be concealed from strangers, except that which might show unintentionally (i.e. parts of the dress or ornaments) or which show as a matter of course because it is not prohibited that they be shown (i.e. the face and the hands).
Abu Dawud narrated that 'A'ishah said:
Asma came to see the Messenger of Allah (saws). She was wearing a thin dress; the Prophet (saws) turned away from her and said to her: "O Asma, once a woman reaches the age of puberty no part of her body should be uncovered except her face and hands."
It should be noted that the Arabic word khumur (plural of khimaar) which has been translated above in the ayah from Surat an-Noor as veils, means head covers, not face veils, as may mistakenly be supposed. It refers to a cloth which covers all of the hair. Furthermore, the word juyoob (plural of jaib), also found in the ayah of Surat an-Noor, refers not only to the bosom, as is commonly thought, but also to the neck.
Qurtubi, an eminent mufassir (Qur'an commentator), stated:
Women in those days used to cover their heads with the khimaar, throwing its ends on 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 khimaar.
"And let them not stamp their feet so as to reveal what they hide of their adornment."
Women in the time of the Prophet (saws) used to wear anklets, which they could employ to attract attention by stamping their feet, making the anklets tinkle together. This practice was now forbidden, but even more important for us, these words make it absolutely clear that the legs and ankles are to be covered.
Bin 'Umar narrated
Let them lower their gaze Prophet (saws) said: "On the Day of Judgment Allah will not look upon one who trails his garment along out of pride." Um Salamah then asked: "What should women do with their garments?" The Prophet (saws) said: "They may lower them a hand span." She said: "Their feet would still be uncovered." The Prophet (saws) said: then lower them a forearm's length, but no more."
Tirmithi
The ayah from Surat an-Noor quoted above gives us specific and detailed information about what a Muslim woman should be sure to cover when she is in the company of strangers, and it gives a detailed list of those with whom she is permitted to be less inhibited. The ayah quoted from Surat al-Ahzab further directs Muslim women to put some outer garment over their clothes, and to draw it close around them.
Abu Dawud related that after this ayah was revealed the women of the Ansar appeared like crows (because of the black cloaks which they wore).
Some outer garment, whether a cloak or a coat, must be worn by a Muslim woman when she is in public, and even when she is in her own house or that of a close relative, if she is in the presence of strangers.
It was mentioned above that the face need not be covered. If, however, the woman is wearing make-up, she should cover her face, since the make-up is adornment beyond what is permitted.