Forming half of the majestic Queen Galaxia its not surprising of where half of those luscious flanks came from looking at this girl.
Though the Twilight side of her is more dominant appearance wise because of her dominant colours, the mares make a very even split mentally and really gain a lot from eachother the former purple smart for example, being a lot less prone to to panic thanks to sunbutt being able to think more logically and seeing the bright side of every situation.
Though Morning Star is very busy she understands now that there is always time to sit and read a good book to relax and unwind and gain some much needed perspective on the daily trials she faces.