Rarity has been commissioned by Princess Cadance to design a rather special dress for the alicorn; one that hides a certain, "special" feature of hers between her legs. Once finished, and remarkably satisfied with the results, the Princess offers a suitable and special reward to the hardworking unicorn; the chance to be bred by her. Reluctant at first, Rarity soon warms up to the idea, and Cadance gets to turn this beautiful fashionista into her special broodmare.

This is a Commission for Tailsic.
Derpibooru: 3112218