Original post here. This image was researched by Bacchus at ErosBlog as part of the “Γ commission.” The research was originally published at Hedonix as “Γ 022 – In And Out Of Her R2-D2 Dress.” Here is what Bacchus found.
These are images of “Kit” that she posted to her Switchy Little Princess tumblr (see her “Yours Truly” tag for more pictures of her). Her FAQ with more information about her is here; it’s notable for the advice “I got my followers by getting naked. Why don’t you try the same?” She would appear to be wearing the Artoo 2.0 digital print dress.