Just another day for our favourite fashionista, trying to finish a dress for Princess Luna. When, in walks a familiar looking mare, but, somehow, not familiar looking.
The mysterious mare, asks if Rarity's parents still live in Ponyville.

Well, not one to turn down a mystery, Rarity first of all, finds out that the visitor is her estranged sister, but that's just the start.

Fun, and surprises, are waiting for this fashion conscious pony, when they arrive at her parents.

[A/N]
I've put Rarity with an OC, once you read the story, you'll understand.