My very respected Janab SPS chaudhary sb Adabarz I appreciate ur sporting spirit to ask corrections in ur knowledge about the dress for Men n women Islam is about 1500yrs old only At that time certain dress code was prescribed so that man n women shouldn't look indecent or nude or half nude so that no body should look them with a bad eye. It is biologically natural for man,animal insects reptiles fishes or any living creature of God to be attracted towards the opposit sex n if one is attractive,lusty beautyful than there is chance to have a feeling to get that for biological satisfaction n that is the reason y r seeing that evryday many kidnappings r done just for sex So to avoid this bad feeling,some dress codes were made when Islam came into existance.But,the real PURDAH is not of dress but yr own NIYAT(intention) that how u see ur opposite sex U can see one like ur brother,sister mother,father or daughter.Does eveyone have the same feeling for others? No Not. ErAhmadRaisRiddiqi(Alig) International radio n TV commentator Science,political,sports n feeatures writer 84G,Sectr-7,Jasola Vihar,New Delhi110025