Wow, finally I have the source. Saw this in a video of a Russian livechat feed, couldn't get dA search to work properly and today someone kindly pointed me towards it.
Not only do I like theme crossovers like this, not only are the colors appealing, but I cannot help but see how the pinkieness in this has been ... maxed.
Dunno whether intended or not, but not important, haha. This is just so "yes".
I like to call her Empress Pinkamaxalis.