Twilight's experiments...

So, going back to my roots, we're having the chubby anthro Twilight continuing experiments on her and one of her friends... This time Fluttershy.

However, since I have no clue where I want this to go, so I'm going to let you guys decide what experiment Twilight does to Fluttershy (and eventually her). Just fave and tell me in the comments which option you'd like to see be done:

1) Weight gain
2) Breast Expansion
3) Butt Expansion
4) Inflation
5) Blueberry/fruit expansion
6) Hourglass
7) Muscle gain

Please just select one when you comment. You have until the 10th to comment on this.