When Bristle Star was invited Rarity, he assumed he’d once again be trying on as series of embarrassing dresses. But this time was different, Rarity was expanding into the adult diaper market, and needed a good doll to test them on~

After many hours of testing, Rarity herself taking part, she looks over her designs in the most comfortable seat in the house…Bristle Star.

Oh how will he ever get out of this~