After the shockingly good Nagi-sama cosplay we saw recently, Zange-chan is given a similar rendition. It would not be reasonable to expect much to match the Nagi-sama cosplay, but this is still a first rate effort.
You can see a little of how much Photoshop work goes into some of these photographs by comparing the slight differences visible between differently sourced photographs.
If you have any more, or these in better quality, please pay a visit to the forums. Thanks again to Wanderer for posting these.