Wearing the face veil by mistake in Ihraam

Question:
Is it permissible for a woman to wear the burqa’ (a kind of face veil) when in ihraam? My family wore it and when they came back from Hajj they were told that their Hajj was not acceptable, because they wore the burqa’.

Answer:

Praise be to Allaah.

Wearing the burqa’ is not permissible for a woman in ihraam, because the Prophet (Sallallaahu ‘Alayhi wa Sallam) said: “Women should not wear niqaab or gloves.” [al-Bukhaari]. But there is no sin on a woman who wears the burqa’ in ihraam because she is unaware of the prohibition, and her Hajj is valid. 
And Allaah is the Source of strength. May Allaah send blessings and peace upon our Prophet Muhammad and his family and companions. End quote.
 
Standing Committee for Academic Research and Issuing Fatwas 

Shaykh ‘Abd al-‘Azeez ibn ‘Abd-Allaah ibn Baaz, Shaykh ‘Abd al-Razzaaq ‘Afeefi, Shaykh ‘Abd-Allaah ibn Qa’ood.
 
Fataawa al-Lajnah al-Daa’imah li’l-Buhooth al-‘Ilmiyyah wa’l-Ifta (11/190-192).