Descendant of Mistmane and the firstborn to her parents, Rarity Belle (originally Aquamarine) is a classy and intelligent mare. She was purely created as the purpose to be the world’s “most perfect unicorn foal” with radiant beauty and powerful magic.
Unfortunately only one of those worked as Rarity is naturally quite beautiful, as for magic she is incredibly weak. She can do little more than simple levitation spells and even that’s hard sometimes. At 19 she moved from Canterlot to Ponyville and took her younger sister Sweetie Belle to keep her away from the prying eyes and constant pressure of their status. The two are perfectly happy in their cozy boutique.