Though not quite. I keep changing my mind on what I want to be, so it'll probably come down to how many costume related things I'll be going to and how much it'll cost to do any of these.
My top three as of right now.
Sailor Jupiter(if I suddenly come into money and can afford it).
Toph from Avatar.
I personally like the fire nation outfit more, but it'll be more time consuming to make.
I was also considering being a contestant from Legends of the Hidden Temple, but I think that would work better as a couple-ly costume.