no, you are a girl so you can't go topless (except in certain places like some beaches usually outside the US) whereas boys and men can because...(generally see (1), NOT that I am arguing in favor of this, just--how does one distinguish in a principled manner between requiring women to wear some kind of top (even a bikini top or sports bra) versus having to wear a head scarf or body covering in other societies)?
IMHO, you don't. There are plenty of places where topless women are equally acceptable (or unacceptable) as topless men. A hundred years ago, a topless man would have been considered obscene.
Certainly there's no principled (or even logic-based) argument for not letting a prepubescent 8yo go topless. Whereas I can think of many aesthetic arguments for requiring overweight men to keep a shirt on whenever an adult woman would be expected to wear one. *shudder*
