I am not sure if born-500-years-after-Christ began-500-years-after-the-start-of-Christianity Mohammad was appalled at and suffered under the same type of lewd and despicable mopheaded, nude-sleevesless-armed, naked-legs-in-shorts, socksless-feet-in-sandals public immodesty rife and reeking of american gals freely roaming around wherever they want and thus sexually harassing everyone they impose themselves to with impunity.
I assume that there were at that time monks and Catholic nuns consistently sporting their habits of burka-and-hijab-like modesty when in general public view during the Middle Ages when Mohammad came into being for the first time.
Perhaps gross indecent immodesty of girls and women was not the cause of why Mohammad did not embrace the already-well-established Christianity having Judaic roots going all the way back to Sarah's and Abraham's and especially the LORD's preference to Isaac instead of the Ishmael who, according to the KJV's rendition of Genesis 21:9, was "mocking" (whether the object of such ridicule was Isaac personally, Isaac's godly or unique behavior pertaining to Isaac's relationship with the Lord, or whatever)...which "mocking" understandably got Ishmael ousted out of the Abraham-with-Sarah Jewish family.
Whatever the case, Mohammad (according to many reputable historians) was no representative of Jesus Christ, and did not even come close. His anti-christ-like reputation was instead that of a murderous polygamist who did not exercise proper marital polygamy with respectful acquisition and treatment of the pseudo-concubines he forcefully took and abusively possessed. Added to that, he concocted his own revisionist alteration of what He most probably knew of previous Old-and-New-Testament Judaic-based Scripture and named it the Qur'an (or, in English: "the Koran") containing directives to "subjugate and kill both Christians and Jews wherever you find them."
Getting back to the female-human-modesty-in-general-public-view aspect, fundamentalist and other islamic or muslim girls and women have every right, especially here in the United States, to convert to Christianity, and they have even more right to retain their most-admirable and satisfying hijab and burka clothes to display when in mixed-gender public view.
To all jihad muslim or islamic family members who disagree with that, and would do such female converts harm or stress in any way pertaining to that, understand that in this country everyone is not compelled to be under sharia law, but instead American law. So be afraid.
Exodus 20:3 You shall have no other gods than me.
Exodus 23:13 Take heed to all that I have said to you; and make no mention of the names of other gods, nor let such be heard out of your mouth.
Leviticus 24:16 Anyone who blasphemes the name of the LORD shall be put to death; all the congregation shall stone them; the traveler as well as the native, when they blasphemes the Name, shall be put to death.
Deuteronomy 5:7 You shall have no other gods than me.
6:14 You shall not go after other gods, of the gods of the peoples who are round about you;
7:4 For they would turn away your sons from following me, to serve other gods; then the anger of the LORD would be kindled against you, and He would destroy you quickly.
8:19 And if you forget the LORD your God and go after other gods and serve them and worship them, I solemnly warn you this day that you shall surely perish.
11:16 Take heed lest your heart be deceived, and you turn aside and serve other gods and worship them.
Deuteronomy 13:6 If your brother, the son of your mother, or your son, or your daughter, or the wife of your bosom, or your friend who is as your own soul, entices you secretly, saying: "Let us go and serve other gods," which neither you nor your fathers have known,
7 some of the gods of the peoples that are round about you, whether near you or far off from you, from the one end of the earth to the other,
8 you shall not yield to him or listen to them, nor shall your eye pity them, nor shall you spare them, nor shall you conceal them;
9 but you shall kill them; your hand shall be first against them to put them to death, and afterwards the hand of all the people.
10 You shall stone them to death with stones, because they tried to draw you away from the LORD your God, who brought you out of the land of Egypt, out of the house of bondage.
11 And all Israel shall hear, and fear, and never again do any such wickedness as this among you.
12 If you hear in one of your cities, which the LORD your God gives you to live there,
13 that certain base fellows have gone out among you and have drawn away the inhabitants of the city, saying: "Let us go and serve other gods," which you have not known,
14 then you shall inquire and make search and ask diligently; and hey, if it be true and certain that such an abominable thing has been done among you,
15 you shall surely put the inhabitants of that city to the sword, destroying it completely [remember Hiroshima and Nagasaki], all who are in it and its cattle, with the edge of the sword [nuclear bombs].
16 You shall gather all its goods into the middle its open square, and burn the city and all its goods with fire, as a whole burnt offering to the LORD your God; it shall be a heap forever, it shall not be built again.
Isaiah 50:8 He who vindicates me is near. Who will contend against me? Let us stand up together. Who is my adversary? Let him come near to me.
Matthew 10:34 Do not think that I have come to bring peace on earth; I have not come to bring peace, but a sword.
35 I have come to set a man against his father, and a daughter against her mother, and a daughter-in-law against her mother-in-law;
36 and a man's enemies will be those of his own household.
37 He who loves father or mother more than me is not worthy of me; and he who loves son or daughter more than me is not worthy of me;
38 and he who does not take his cross and follow me is not worthy of me.
39 He who finds his life will lose it, and he who loses his life for my sake will find it.
Matthew 12:46 But while He yet talked with the people, hey, His mother and His brothers stood outside, desiring to speak with Him.
47 Then one said to Him: "Hey, your mother and Your brothers stand outside, desiring to speak with You.
48 And He answered and said to him who told Him: Who is My mother? And who are My brothers?
49 And He stretched out His hand toward His disciples and said: Hey, My mother and My brothers!
50 For whoever shall do the will of My Father in Heaven, the same is My brother and sister and mother.
Admittedly, American laws are not perfect regarding disdain of legal polygamy, while they have no problem allowing pseudo-"marriage" same-gender homosodomy-unions licensings even involving Social Security benefits and more. And American law is certainly not concordant with a literal interpretation and application of strict Torah law involving due-process execution-if-necessary against witches, sorcerers, blasphemers, homosexuals, prostitutes, adulterers and adulteresses, rapists refusing to become permanently married to the ones they rape, etc.
Because of that, the void and vacuum caused by an immoral majority of americans turning away from and disregarding Torah-and-other imperative modesty and sexual decency commands within the Bible results in inevitable craving for absent and missing public righteousness which provides lamentable demonic opportunity for close-but-not-close satanic substitution of islamic sharia law where homosexuals and other sexual immoral or indecent types are either beheaded, stoned, or thrown off the top of buildings to their death.
There is plenty of basis for islamic-and-muslim female converts to Christianity to retain their blessedly-modest hijabs and burkas not simply within churches but even in general public view -- being that such is right in line with a proper interpretation, understanding, and application of mandates, directives, admonitions, and examples clearly put forth in RSV's and NASB's Numbers 5:18 [hairstyle], Deuteronomy 32:42 [hairstyle], Second Samuel 13:18 [armwear], Proverbs 5:19 [shoulder and chestwear], Song of Solomon 7:5 [hairstyle]. Isaiah 3:17 [crotchwear], Isaiah 20:4 [buttwear], Isaiah 47:1-4 [legwear], Jeremiah 2:25 [footwear], KJV's First Corinthians 11:14-16 [hairstyle] and First Timothy 2:8-15 [general bodily modesty]: