Pearl Belle is Rarity's only child. She is the subject of Like Mother, Like Daughter and appears in Grounded and Glorified. See stories below:

https://www.fimfiction.net/bookshelf/1294304/bright-future?order=latest


Pearl grew up all her life with a very wealthy, very busy mother; that is to say, without much of her mother in her life at all. Instead, she was passed around to various members of the mane six from birth while Rarity was away growing her fashion empire across the country. She's everyone's extra daughter/sister depending on the generation, and a majority of her childhood was spent at Sweet Apple Acres under Applejack's care. She's had anything she's ever wanted in her life, save her mother, which leaves her rather spoiled, high maintenance, prissy, and absolutely girly. She is a diva, but she cares deeply for all her 'siblings,' though she'd never admit that to anyone, least of all herself. She is closest with the Apple identical twins Stout and Cider, her primary childhood playmates.