Answer
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
It is not obligatory to wear Hijab in front of non-Muslim women because they are like all other women according to the more correct of the two scholarly views unless a woman fears that the non-Muslim woman may describe her to her husband or to any other non-mahram man.
Answering your question, the Fatwa Center at Islam Q and A, states:
The scholars differed concerning the ruling on whether Muslim women can take off their Hijab in front of non-Muslim women, because they differed in their interpretation of the verse in Surat An-Nur:
{… and not to reveal their adornment except to their husbands… or their women…} [An-Nur 24:31]
There are three views concerning the Tafsir of this phrase:
- That it means Muslim women;
- That it means all women, Muslim and non-Muslim;
- That it means Muslim women preferably but this is not binding.
The more correct view is that it is permissible for a Muslim woman to appear (without Hijab) in front of a non-Muslim woman, unless she fears that the woman may describe her to her husband or to any other stranger (non-mahram man). In that case, she has to keep her Hijab on in front of that woman. There is no difference between a non-Muslim woman and a corrupt Muslim woman in this case.
Among the evidence that it is permissible to take off Hijab in front of a non-Muslim woman is the Hadith of Aishah (may Allah be pleased with her) in which she mentions that a Jewish woman came in to see her and said, “May Allah protect you from the torment of the grave…” (Al-Bukhari and Muslim)
Shaykh `Abd Al-`Aziz ibn Baz (may Allah have mercy on him) said:
“It is not obligatory to wear Hijab in front of them – non-Muslim women – because they are like all other women according to the more correct of the two scholarly views.” (Fatawa Al-Mar’ah Al-Muslimah, 2/582)
What the Muslim woman can uncover in front of a non-Muslim woman is the same as what she can uncover in front of her Mahrams, i.e., the places of adornment or the places of Wudu.
Shaykh Muhammad Salih ibn `Uthaymin said: “In front of her Mahrams, she can uncover her face, head, neck, hands, forearms, feet and calves, and she should cover everything else.” (Fatawa Al-Mar’ah Al-Muslimah, 1/417)
Almighty Allah knows best.
Source: IslamQA.Info