African american girls?

I recently started working at a arts school aged service and I have notice that all the African American girls (6-10) hold their armpits covered with fleece. How is this possible? Why do Caucasian girls or even African American boys exhibit such a phenomenon?
Thanks
Answers:

Girls only and develop answers, please!?

I can't answer this well in need a bunch of retards saying I'm racist, so I'll purely think it really not easy and hope you intercept my brain waves.

I'll right to be heard this though, according to the studies I've seen, african-american girls develop sooner than caucasian girls, and since girls typically start puberty sooner than guys, that would statement for your observations.

Is it normal that a girl (25y) doesnt own a period for almost 34-35 days?

Uhh, what are you talking in the order of?
Please don't tell me you work nearby!

Do u like to navigate or mortal navigated upon until that time dropping the anchor & why?

huh? what's your question?

Are bras worse to wear within summer? Do they cause more sweat?

they are extra horny

What can be wring near me?

it could be that the hair is black, so it is extra visible

and caucasian girls probably enjoy hair, too, but their spike are lighter, so it is not so visible

girls tend to start puberty early, boys start delayed, to the boys don't grow hair so untimely

I'm on my period my stomach hurts but i don't hold cramps whats wrong?

I'm assuming it's because black people enjoy darker coat, so you can see it better. White girls also have coat, it's just not depressing and thick.