i think it is not....
You think,cause i mean you did saw this? http://img-fotki.yandex.ru/get/4602/kallewskyart.1/0_36622_8bb0a3_L It doesn't really looks like fan art :) :P
We have this Roxy doll at home and YES, she is wearing exactly this outfit.
Oh well better late then never! Thanks for that information!!! All nest!