Rairty found Sweetie some special underwear that gives her a cutie mark. It’s also what all the fillies that don;t have cutie marks are wearing.
Seriously there needs to be more diapered sweetie pics.
I made the diaper thicker. I also removed the blush, because I suck at doing MLP style blush. Fixed the LA so it looks more Pony like. and a few more little details. Though I think I made the purple on her tail too thick… oh well.