3D Nia

Her other cosplays are just as stunning. IMO good cosplays are ones when you see them you go "OH!! It's <put the character name here>" instead of "Oh! It's <put the name of the cosplayer here>. There're a lot of the latter these days, making the former even more precious to be saved forever on my PC for later reference :D.

You can see more of Hachimaru's cosplays at here, here, here and here.