A commission for Emilia Starsong from Derpibooru and Discord.

Shatter and Emilia have befriended each other. They decided to be diapered together, but also use the Mental Regression Potion to make things more interesting. Emilia of course drinks most of it and is now a dumb bab. Shatter is a little filly, but big enough to care for the bab brained Emilia. These potions are much more stronger so you regress much more with these ones.

($) Means a commission.