After both Princesses shot their load up Rarity's ass, she bet they couldn't both fit inside of her at the same time. Not sure exactly who wins the bet here..
Someone from my Tumblr requested a continuation of this one a little while back. Rarity's cell phone shenanigans may just become a regular thing for me XD.

PS: Celestia's hair is a huge pain, so I couldn't really move it out of her face at this angle :/
Cell
2015-09-07 05:53:33 +0000 UTC