This story is a sequel to I'm a BIG Pony
The last of the three parts of benzema2912's story arc. Mind, there are three individual worlds where each member of the CMC found a way to make themselves grow. In this, Sweetie want's to have a grand destiny. Something big and meaningful like what Rarity and the Element Bearers do. Borrowing a spell book from a professor, she casts the spell she finds in there that's supposed to do just that, and finds her destiny is a bit bigger now than she ever imagined possible.(Sweeite Belle Macro/Cosmic sized fic)