I do not know legally when they are required but many of them imitate other women as children. And all depends on country, in every country is not required to wear it, women do it by their choice
Not all girls wear it, but of the true Muslim girls that start, the earliest is when they are of age when the accountability of kids begins. Around age 7-8. Some start later.
Men should not 'dress' women. Women should dress themselves. Force is unacceptable. PERIOD.
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@ S'sre welcome.
Choice? No problem. How many women in Iran enjoy that 'choice'?
It is FORCE that I oppose, not choice!