From the same hand that brought us Art Nouveau Horse.
How is this My Little Pony? The image echoes the show’s color scheme, which hovers at the pink/purple end of the spectrum, albeit less pastel. MLP:FIM Wiki
BTW, in Googling the above, I came across a post on the creator’s motivation behind MLP: Friendship is Magic. My Little NON-Homophobic, NON-Racist, NON-Smart-Shaming Pony: A Rebuttal by Lauren Faust (Deviant Art page). Of note, the subtitle is extremely important. Earlier versions of MLP are too insipid to be borne. MLP:FIM counts as generation four. MLP Wikidedia