DISCLAIMER: This picture was NOT drawn by me. It was purchased as a commission from the scrumtrillescent Waltz.
Isamu demonstrates why, despite being twins, she will always be Minagiru's BIG sister.
As her casually smug expression implies, she isn't anywhere NEAR her maximum capacity yet, and could probably maintain this size for hours before feeling any strain.
I have to wonder where she buys her clothes. Either that outfit was several dozen sizes too big to start with, or everything in her wardrobe is made of spandex, latex and lycra.