Ivy wasn't particularly upset with Selina, though she did recall the last time they met, shortly after Ivy started eating more.
Selina was perched on a gargoyle, waiting to strike a rich heir's mansion. Ivy was a few feet away, green belly sticking out a bit. "Getting a bit big for your britches, aren't you Ivy?" Selina purred.
"I'm just putting on water weight," Ivy replied.
"Sure, sure, whatever you say."
They had both taken what they wanted from the heir shortly afterward, Selina making off with some jewels while Ivy escaped with a rare kind of daisy. The memory of Selina's taunt still fresh in her mind, Poison Ivy decided to take a more subtle approach. Dialing Selina's number, she got a hold of the thief. "I'd like to plan another heist with you. Would you mind coming over to my place?" Selina agreed and, after getting directions, hung up.
The next evening, Selina showed up at Ivy's current lair, a model home community on the outskirts of Gotham. Ivy greeted her with a smile, which Selina carefully returned, though her grin soon turned catty as she poked Ivy's much larger middle.
"Still living in the fat lane, huh Ivy?"
"I've just gotten in touch with the woman inside me."
"Looks like you've got more than one in there," Selina joked, before sitting down on the couch, ready to go over their plans. Ivy sat down next to her and let her new power go to work.
A loud gurgle came from Selina's stomach and she blushed a bit.
"Have any food?"
Ivy nodded and went to grab the cart she had prepared, wheeling it out to her.
Normally Selina would have questioned why Ivy had so much food ready, but at that point she didn't care, soon she found herself chewing with abandon. Ivy watched as Catwoman gorged herself silly, managing to devour the entire cart by herself, the end result being a stuffed cat burglar rubbing her large belly.
Ivy watched her plan unfold in front of her very eyes, smiling with delight.