a person doesnt even know the age of a woman who is wearing niqab. because the people cant see the face of a woman with niqab on how can even he know that the woman is virgin!!! with Hijab on its more easier to know is the girl virgin or not cause of the girls age. To assure other that a girl is not virgin she gotta walked naked on the street to stay safe from those rapist who just only looks for virgin girl!!! And not all rapist looks for only virgin girl. I doubt very much a rapist will go for a virgin girl who doesnt look beautiful that much but surely they will want to rape a girl whose beauty is shown at publich(doesnt matter is the girl virgin or not) there are 80% of beautiful girls who will be considered as beautiful by majority of man, so they shouldnt be worry about who considers them as beautiful or not, they should just for niqab.