As-Salaam Walikum- Yes A Muslim girl must cover everything except for the hands. Once they attain the age of puberty They can wear it before they attain puberty if they want to.... because I wanted to wear the Burkha before I Attained the age of puberty it was my choice... Mashallah...A muslim girl/Woman should cover her hair,Right?
~~Salam~~

~~~As-Salaam Walikum~~~