Yep, it's kind of lame, but it happens to all of us. Dont take it personal. I imagine it's worse for you because you're ovbiously a girl. 
Welcome to the internet I guess. Just let it bounce off of you. Remember they dont define you! Hope this helps!
. A lot of people ask me my age and for facebook info in games which I don't like.
I just enjoy playing chess and people insult me and call me names on my profile!