Poison Ivy sighed as she lounged back in her plant throne in the Gotham Botanical Gardens. Normally, this would be the point where Batman would swoop in, defeat her evil plans, and lock her back up in Arkham. But he was nowhere to be found. Ivy wasn't surprised.
After all, she had managed to take over the entire world.
Through months of extensive training and use of chemicals, Ivy had managed to grow her powers immensily, and proceded to take over Gotham with her plants. Her vines destroyed or completely covered the buildings, her pheromones had permanently taken over the minds of everyone in Gotham, and most importantly of all, she finally managed to defeat the Batman. After that, she spread her powers to the rest of the country, and then the world. Everyone fell under her control, and she finally achieved her goal of returning the world to it's natural state. She was now ruling like a goddess.
Since she had no opposition (she gave a whole island to the other Arkham villians to do as they see fit), she spent most of her days in the Gotham Botanical Gardens, which she made her palace. Aside from giving orders, she mostly just lazed around and absorbed sun and water, having no need for actual food. But much like food, the sun and water had a noticable effect.
Realizing that she still had other duties that day, Ivy frowned and got up from her throne, taking a moment to look down at her green skinned body. In the months since she had taken over and started lazing around, she had gained a considerable amount of weight. She guessed that she weighed around 300 pounds now. While her breasts did grow to about F-cups and she had a fairly large belly, most of her weight had settled in her hips, thighs, and butt, which had ballooned incredibly. Her hips jutted out to about a foot on each side, and her thighs were as thick as her vines. But her butt was her now biggest feature. Each cheek was the size of a basketball, and it jiggled with every step she took.
Ivy felt proud of her new figure, as it reflected on her new life as the ruler of the planet. And besides, the Earth was massive, so why shouldn't she, as "Gaia's Avatar", as she often called herself, be the same?
The door swinging open pulled her out of her thoughts. Annoyed, she looked up to see who it was. She calmed down when she saw it was...