Which one, you ask? I'm not sure myself.
EDIT: Several users have informed me that this kid is dressed up like Winry Rockbell from Fullmetal Alchemist. I see what they mean!
Halloween season is well upon us by now, which means that all kinds of cool parents have found new and creative ways to dress up their children for the holiday. Check out a bunch of them in the gallery below and let us know your favorites in the comments! And make sure to stick around for next week, when we have all of the costume FAILs from this season!