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.

Proper Hijab should: 1. Should cover all the body. 2. Should not be an adornment in and of itself. 3. Should be thick and not transparent or see-through. 4. Should be loose. 5. Should not be perfumed. 6. Should not resemble the clothing of men. 7. Should not resemble the dress of disbelieving women. 8. Should not be a garment of fame and vanity.

A woman’s mahram is a person whom she is never permitted to marry because of their close blood relationship or because of breastfeeding or because they are related by marriage.