Wearing the berka', or niqab, or forehead veil by Muslim woman is not an obligation per religion. However, wearing it is not prohibited p religion. It is a matter of local traditions and cultures. In other words, it is found to be popular in some countries while not in others, according to a specific area's tradition. As for the Islamic belief, it is to be favored only if a woman fears to be harmed or to cause harm for others if she is very beautiful, for example.
It doesn't have a specific shape or form, every woman can have her own style, neither a specific fabric is recommended, even a soft transparent cloth would do effect, the aim is to make face expressions not so apparent, but without hindering the woman's ability to look, talk, and breathe.
They wear sablay
Muslim women are ought to wear veils
Yes, very devout Muslim women wear them because it is part of their religion.
it is prohibited for muslim women to wear perfume outside their husband's house. If they are at home with their husband, it not prohibited.
yes.
if they like
hijab
Yes
No. That would be some Orthodox Jewish women. Not Muslim women.
Judaism
BURKHA
they are muslim