4 years and a downscaled duplicate later... we still don't know the artist.
I poked around for a few, as I was reminded of this picture, but you don't have to look too hard to see one of them prefers plumper bodies and a more desaturated coloring palette.
Sometimes things like this are just a one shot drawn by an anonymous person, there may not be an artist. Or, the artist may have already closed shop before they could be found.