WHAT BODY PARTS CAN WOMEN SHOW IN PUBLIC? [From ISLAM: THE TRUE HISTORY AND FALSE BELIEFS by Dr. Shabbir]
Face, hands and forearms, heads, feet and ankles.
5:6 O You who have chosen to be graced with belief! When you congregate for Salat, wash your faces and your forearms, hands to the elbows. Lightly rub your heads and your feet to the ankles."
Ibn Umar said that during the times of Rasulullah (S) men and women used to do Wudhu together." (Bukhari published by Madina Publishing Company, Karachi , 1982, Printer Hamid & Co, vol 1, pg 169 Kitabil Wudhu. The translator is “Maulana” Abdul Hakim Khan Shahjahan Puri)