Following Princess Luna, Celestia is now available for pre-order over at Kotobukiya's website for $160. She's a bit more pricy than Celestia, though you get a bigger pony for the tradeoff.
Go pick her up over here! The expected release date is anywhere from December of this year to February of next year.
And find a closeup of the pony below.
Thanks to Sombra for the heads up