Image imported from derpibooru 
Original Description:
 
At last, the master and the apprentice become one. No need to write anymore “Dear Princess” letters nor having to teach lessons when both are wrapped in a youthful, wise, yet adorable package. Princess Morning Star at first could have been confused by many as a much more mature version of the former Princess Twilight. Though a few words, explanations along with some reassurance lets everypony know that she is indeed Celestia and Twilight in one. Unlike her component sun goddess, she does lack the metabolism to maintain her “rear” figure, giving this alicorn a big old bubble butt, albeit thicc for a mare her age. Jokes made by the public at the expense of her royal plot would slowly go from humorous to just annoying. However, offer the mare some cake, coffee, and a library and you may never see her again, for hours at least. This combined with her youthful more bountiful self, and you have a master of knowledge and skill, seeking to learn ever more, all the while to not neglect her motherly duties as a ruler of the land.
 
In other words, this momma of a mare will be definitely one to read you a bedtime story before bed. Though which book she’ll read you will drive this big girl into an internal debate that may last throughout the night!!