Found this one a while back, and I was like, WTF?
But anyway, apparently, the girl gets possessed by a ghost, causing her breasts and ass to grow bigger...
I ain't complaining.
Source was
http://ghost-possessionclub.deviantart.com/ but they seem to have pulled it since... I'm not 100% I like this ghost-possession thing myself (though I won't complain about the results)... but it may be a new fetish on the rise..