So this started out as me screwing around with bedroom eyes and trying to get that right. That went through bedroom eyes stocking and guarders Twilight, bedroom eyes french maid generic pony, bedroom eyes for someone else antrho schoolgirl Twilight, and crash landed solidly on an adorable anthro Fluttershy eep. I have a sketch dump with all of those other ones:

In any case, Fluttershy, even if not necessarily best pony, is very definitely most adorable pony, and even most adorable anthro pony.

PS: Hey look! I didn’t forget her wings this time. XD
PPS: Her tail was excluded by deliberate choice, it just didn’t flow well with her sun dress.