Toph Bei Fong from Avatar the Last Airbender cartoon.
This was one of those power costumes I made in one day. I made everything on this costume including the wig.
In order to reduce heat, the green sleeves are collar are sewn into the tunic. There is a hidden pocket in the belt to hold important items while wandering around a convention.
And a Video: Toph BeiFong - Avatar Cosplay - YouTube