Fluttershy and Rarity (Patreon)

At Fluttershy's house, Rarity is visiting and she brought two diapers with each one's pony face, Rarity thought it would be fun to use them and Fluttershy takes out two pacifiers after a good while of using them, they stayed in an armchair looking at the diapers of each one and how they swelled by the accumulated piss and poop.