Altair/Gunpuku/Military Uniform Princess from RE:Creators, mostly because i love that show.
Reference image:
http://imgur.com/a/vJO7SIt's not known entirely (Because its impossible to find pictures of her from the back since she almost always faces the camera) But its assumed this is how her back looks.
http://imgur.com/a/qIkpF(I'm 99% certain the hat can't be done so I'd forget about it)
Even if you end up not doing this, I'd recommend watching RE:Creators anyway, its one of the best this season by FAR.