Mlp-the new pony (fan fic)

We all know about the story of mlp but we didnt know that Rarity had a twin called Priceless. We experience a whole new story about Priceless joining Twilight on her quest about learning anout friendship. Priceless was born special she was born an alicorn and was raised by princess Celestia. Even at a old age ( the same as twilight and the gang in the series) she still doesnt have a cutie mark, with the help of her friends she will learn what it is.