Being a Muslim Woman, how must they wear their attire to say that she is a muslim woman?
Scholars have specified the requirements of the Muslim-woman's proper dress before al-ajaanib (lit. foreigners, i.e., those to whom marriage is permissible) from both the Glorious Qur'aan and the sunnah. Once a woman adheres to such conditions, she can wear whatever she likes and go out into public places so far as her hijaab complies with the Islamic law. A summary of the requirements are as follows:It should cover the whole body. It should be thick enough, i.e. non-transparent or translucent. It should be loose and not tight on her body. It should not be decorated or ornate such as to attract onlookers. It should not be perfumed. It should not be considered libaas al-shuhrah. It should not resemble the dress of men. It should not resemble the dress of the unbelievers. It should not bear crosses or depictions of anything with a soul (humans, animals, etc).
This is a summary of the requirements according to the Islamic shari'ah. A complete answer with the major daleel for each one shall be published in shaa' Allaah.