It was a once in a lifetime opportunity: different Zeldas and Links from across times and dimensions all meeting in one interdimensional castle. At first, there was some confusion as to how to address each other, but that was soon figured out by addressing each other by events or items from their life, or else using nicknames or alternate identity names. Some of these princesses and heroes told stories of their adventures. Some shared strategies for upcoming conflicts. Others gossiped. Wild Zelda was taking another trip to the punch bowl when she overheard some of the other Zeldas talking.

“Who does that Wild think she is, wearing those tight pants and showing her ass off to everyone? Does she think we’re impressed?” complained Tetra
“I’ll admit, she does seem to be trying to flaunt herself in front of the Links” Skyward Zelda added, “And a few of them even took notice.”
Wild Zelda’s ears perked up at this, as she considered herself the prettiest Zelda and wanted the others to know it. It looked like her plan was working.
“Yeah, but she’s got nothing on that other Zelda. The one who came here with Hilda?” Minish Zelda giggled, “She’s probably got the biggest butt of them all! And it looks like the Links are noticing that too.”

In shock, Wild Zelda looked across the dining area to see that, indeed, not all eyes were on her. Instead, that Zelda that went Between Worlds was drawing the eyes of most of the heroes in the room, especially because she had changed into a sleeveless purple top and a white thing halfway between a mini skirt and a loincloth, supposedly to “go swimming”. And she wasn’t exactly being subtle either, turning around a lot so everyone in the room could get a good look at her bum, bending over to talk to a shorter Link or to pick up things she dropped a few too many times.

Envious, Wild left the room and, after a stop in the castle’s library, entered a secluded fountain courtyard where could read the book she grabbed at her leisure: Forbidden and Foreboding Spells: a collection of spells and curses that have caused problems for people in the past. But Wild didn’t think herself some reckless dummy, and she was only going to use one spell from it: she was going to make her butt bigger than that Between Worlds Zelda, that’s all. Finding an Ass Expansion spell, she read through the instructions, the most important of these were: One must be disrobed at the bottom to cast this spell, the spell has a range of about 30 feet or 9 meters, One must clearly state the name of the intended target.

“This seems easy enough” Wild said as she took off her pants and panties, blushing and feeling butterflies as she did so. After all, she could feel the warm air on her backside and knew that it was possible, however unlikely, that someone could walk in on her like this. Regardless, she closed her eyes and said out loud
“Princess Zelda’s ass will grow”
At first, nothing seemed to happen, but sometimes spells take a moment to work. Eyes still closed, she massaged and bounced her own ass, imagining what it would feel like once it grew bigger and sexier than it already was. She would find out soon, however when her butt ballooned outward with a jolt! Her eyes shot open, as she wasn’t expecting it to happen so fast and to feel like that: it was relaxing and tingly, like when one gets off a limb and the blood comes flowing back, but with ass fat instead. Looking at the change, she was quite satisfied with how her butt looked now, resembling two small pumpkins in terms of size. With a smirk, Wild Zelda wished she could see Between Worlds Zelda now.

“Um… what are you doing?”
A shocked and embarrassed Wild looked to her left to see Between Worlds watching her, smirking with her hand on her wide hip.
“No wait, don’t tell me,” Between Worlds said, “You were hoping to use that book to try and match me back there, right? Pathetic.”

Between Worlds was about to taunt her further, but she had a strange feeling in her ass, a tingling feeling like she just got up after sitting a long time. With a jolt, her own butt ballooned outward!
“What?! What did you do to me, you savage!?” Between Worlds Zelda yelled at Wild Zelda, who couldn’t help but grin at her rival’s misfortune.
“Gee, B.W., I know you like having the biggest ass around, but this might be going a bit too far.”
“Sh- Shut up! This wasn’t me! What was that stupid spell you cast? Let me see it.”
Reading the spell, Between Worlds Zelda glared at Wild Zelda, her long ears twitching.
“Well, no wonder this happened, you were careless! Look at this, a thirty foot radius, well I was in there when you cast the spell.”
“You were?”
“Yeah! A jealous girl disappears with a spell book? I had to see what’s up.”
“Yeah, but even so, I told the spell to-“
“—to ‘Make Princess Zelda’s ass bigger’.  I’m Princess Zelda too, remember? That spell worked on both of us!”
“Oops.”

An awkward silence followed between the two princesses, one in a makeshift swimsuit, the other only wearing boots from the waist down and both of them with magically enlarged rumps. Embarrassed by the situation and unsure if they wanted to be seen like this, they sat on the rim of the fountain, neither woman looking at the other.
“So how do you undo this?” Between Worlds asked
“Well, this is a basic curse, so Great Fairy magic should fix it no problem.”
“Except there’s no Fairy Fountain in this castle. We’re going to have to wait until the get together ends and we can go back home.”

Another long, awkward silence, punctuated only by the girl’s frustrated sighs. Then, with a smirk, Wild Zelda looked over at Between Worlds Zelda.
“Well…mine’s bigger.”
“No, it’s not! Hmph!”