Diana princess of Themyscira had been going though a rough patch as of late, switching between being massively angry at the slightest thing to just holding up on the island. the JLA of course had been concerned but of all things it would take a visit from the goddess of love to unlock what was bothering the warrior princess as she stewed in her room one night.

Aphrodite had known for a long time just what it was Diana wanted, and seeing a child of the gods fighting herself, suppressing what made her happy hurt her. 
hence why she made the trip one night to the room of  Diana while she was visiting home despite the isle of the amazons technically being the domain of Artemis. Her warrior sister though had given her blessing and she appeared before Diana who was tossing and turning in her bed.
"Child..Awaken." The goddess said, then winched as Diana rolled out of bed, sword and shield ready before seeing she was in the presence of a goddess.
"Sorry..I Just.." the Brunette princess muttered, blushing.
"You're just on edge because of what your want is conflicting with what you think you should be. " Aphrodite said, smiling.
"I..I have no idea what your talking about!" Diana stammered, blushing badly now even though she had put down her weapons..she took up a defensive posture.
"Really? So you haven't been thinking about the warm comfort of thick padding between your legs and being treated like the the little girl you ARE..not the big girl you SHOULD be?" Aphrodite asked and winked. "Before you lie.. remember what goddess your talking to." 
the blush was so red and hot Aphrodite could almost feel it and Diana whimpered, squirming in her spot. 
"I..I..You can't tell my mother!" She mewed. 
"heh.. Dianna.. You shouldn't hide what you desire and want. be loud and proud of it!" the goddess said and then with a wave of her finger, Diana's outfit would change.
the tight spats she wore before would bloom out into a thick diaper, even as a package of self replacing diapers would form on the bed and a pacifier would pop into the warrior princesses mouth, on a cord. 
her outfit would mostly remain the same save for being become a star strangled diaper shirt so wonder babies diapers would sag down as she undoubtedly used them.
she would keep the lasso of truth though her shield would vanish and her sword was replaced with a baby battle rattle.
"Go forth Diana of Themyscira..and promote that being yourself is never word..and know that you'll find love and acceptance among your sisters." Aphrodite coo'ed and then coming in and patting the amazon's bottom. "And that you make a cute big baby."

It wasn't that Diana had doubted the goddesses words but even as she came down the next morning, in a clean diaper she had been nervous. they looks she had gotten from her mother and the rest of the royal court wasn't the shock and laughing mirth she had expected, but warm smiles.
"I was wondering when you'd finally admit the truth my daughter." Hippolyta said, coming over and pulling her daughter into a embrace.
"M-Mommy?" Diana asked, finding herself hugging Hippolyta back. 
"I've known what you are for a long time, but it wasn't my place to say. know that here on our island, you can be as little or as a big as you want." Hippolyta said and kissed her daughters cheek.

In the fallout as Diana decided to embrace her smaller side, it became more and more common for her not to be included in JLA missions though she had the full hearted support of Superman, J'ohn, Batman and Aquaman. She also had the confused and not quite understanding but vowing not to judge her support of the green lantern Kyle (who kept trying not to stare, something that made her giggle.) and of course, wally west, the flash. 
"You have to understand that PR is everything for the league, and well.." Bruce AKA the batman had gone to explain. 
"I get it, no worries." Diana said and giggled. "Does that mean we're not still on for Thursday?"
"..I'll have to make adjustments to our plans but I'm sure Alfred will be more then happy." He'd said with a smile.

The public had a heyday with her new attire and it never occurred to her that maybe a villain would view her in a weaken state because of it, nor would it occur to said villain that she was as powerful as ever, if not more for accepting her true little self.
Since was the case with the villain Cheetah who had set a ambush in a public mall, hoping to draw the pampered princess out.

As the normal's whimpered and whined, tried to a fake tree in the courtyard Cheetah snarled.
"Relax! If I had wanted any of you dead, you would be!" the black clad cat hybrid snapped, her accent not doing anything to help as this made them more fearful if anything. 
"For the love of..Look. All I want is wonder baby. the rest of you go free the sec-" She said, coming over and kneeling down to a teen girl, who's gaze was taken from the cat beast in front of her to behind her.
"If you wanted a playmate, all you had to do was ask kitty kat." Diana's voice rang down.
"heh, speak of the nappy lass.."  Cheetah growled but smiled turning around.
there was Wonder baby, in her onsie and thick diapers, a rattle in her hand. 
"Let the humans go Kitty, and I might be a good girl and just play nice." Wonder baby said, smiling, her lip twitching.
"Heh, I can see it, your scared.. but I AM a beast of my word.." Cheetah said and used her claws to slice the ropes holding the normal's. "Let's do this..a big dumb baby at her weakest versus me.. this is the day you fa-" Cheetah went to say, when she was suddenly glomped by Diana, stronger ever before and the princess showered her with sloppy kisses.
"KITTY!!" She coo'ed.
"uh..what?"

what Cheetah didn't know, and what might of saved her in the ensuing battle, was that Dianna was feeling much more smaller today then normal.
ergo when the amazon power house had looked at the beastly wonder..al she saw was a big old grumpy kitty/stuffie that needed all of her loving.
a side product of her giving into her desires as just a little girl had with the blessing of Aphrodite granted her even more invulnerably then she had been blessed with before, so even as the kitty tried to claw and nip at her she shrugged it off, playing up the bite attacks as the kitty kisses her.
"Awww! Silly kitty! I love you too!" Diana  coo'ed and smooched the helpless villain, her base power had likewise been blessed by Aphrodite and so Cheetah was held helpless.
"S-Stop that! my barn door doesn't swi-" Cheetah was roaring but was stopped as Diana planted a smooch right on her lips, like most big babies do with their favorite stuffies, a role that the soon to be ex villain was realizing she was going to fulfill.
Scooped her up in her arms, Diana ignored the useless attacks that followed and carried her new kitty to go and get her properly dressed. 
"L-Let me go! I'll kill you! I hate you!" Cheetah growled and roared and Diana only giggled and gave the kitty a big hug.
"Oh you, I used to be just like you. don't worry. you'll feel better when your dressed like mommy and playing tea party with me!" Diana coo'ed.
Somehow, this only made the silly kitty fight more.

Cheetah was panicking big time, she'd been told the amazon had gone full baby but not that she'd gotten  power boost from it! and now it was clear that the stupid big baby intended for her to be pampered as well and be some sort of pet!
Yet knowing what was in her future and the desperate power it gave her apparently meant as much as a fart in the wind as she was helpless to get free as she was brought to a sex shop that boasted it was the only one that carter to adult babies.
"You wouldn't dare! I'm a mass murdering villain and I refused to be dragged down to your le-" Cheetah started to rant as they went inside, but a adult pacifier was taken from the shelf and freed and popped into her mouth, cutting her off.

Diana giggled as she kept moving, her future stuffie was just SO in denial and silly, but she knew how bad SHE had been and didn't hold it against her. 
Cuddling the kitty lots she found the diaper section and more to the point the dresses they had and mentally squealed, they had princess dresses that they could both wear while having the tea party she planned!
She didn't have the money on her per say at the moment, but setting her stuffie/kitty down and keeping a hand on the the back of her neck to hold her in place like you would with a cat, she pressed her JLA com to get in touch with batman. 
"Batman, this is wonder woman." She said, using the playful little girl tone that made him melt (and ironically had Robin,Nightwing and Batgirl asking her to teach them to get what they wanted)
"yes?" He asked, semi distracted, no doubt hunting one of Gotham's many super villains.
"I've found the perfect stuffie and wanna dress it up! you said you'd help sooo.."
"...I have reports of you fighting Cheetah ." Batman said, a wary tone in his voice.
"And? same thing! Come onnnn.. you promised!" she huffed, bottom lip quivering.
"...Give me the name of the store and what all your getting and I'll cover it." He said, in a tone that suggested he knew it was pointless to fight her, but she had better make it up to him.
"Thank you bat daddy~" She coo'ed.

So..Ok..Clearly the bat was in on this which made this even more doom on her, but maybe, if cheetah could break away and slash at the dresses she could save herself!
the only problem with that train of thought was wonder baby was grabbing right where a mother cat was and she found herself unable to move too much. 
"Ok! daddy paid for our outfits! anything you really want?" wonder baby asked, gesturing out to the rack of the muti colored dresses.
"I am NOT a princess!" Cheetah growled and snarled, though the effect was lost as instead of being angered, wonder baby glomped her again.
"Oh Little kitten! your whatever you wanna be! don't let people tell you that you can't be one!" She coo';ed and finished with more sloppy kisses.
'just my luck..i get a big baby who believes I can shoot for the moon.' Cheetah thought, then had a idea. "Actually..I'm more of a queen and should be looking after you!" She tried.
The giggles and laughter that followed told her before wonder baby spoke up that THAT plan had bombed.
"Silly Kitty! I'ma be YOUR mommy! but we can be queen's together, taking stately matters anther time. not again, which dress do you want?"
"NONE! I REFUSE TO BE YOUR LITTLE PLAY MATE AND YOU WILL NEVER MAKE ME PLAY ALONG!!"
As it turned out, Never lasted all of 10 swats from the enhanced wonder woman.

It was amazing to Diana how something like a red bottom changed the attuide of Cheetah so fast.  Gone was any semblance of a fight and the kitten sniffled and rubbed a eye now in diapers they had taken from a pet mart (Having to use a pack of the doggy diapers to make one as big as Diana's but at least Cheetahs tail was loose and free)
Diana had swapped her onesie for a light blue princess dress that did nothing to hide her pampered state and a blushing and sniffling Cheetah hadn't been able to pick her own, though Diana  knew that was more to being unsure then fighting her.
ever the kind princess baby she had picked a light black dress to replace the black tank top and spats that the kitty had been wearing.
Apparently she had learned she was going to have to find someone to make stronger paci's as Cheetahs teeth could chew though the rubber nipples but that Diana blamed herself for, not taking into account the sharpen fangs of her kitty.
they had been about to depart from the mall when her stuffie pet kitty made a whimpering noise and locked eyes with her, fresh tears coming to the defeated villains eyes.
"Please I..I..had a big lunch.. don't make me.." the kitty bawled, and let out a poot to show what was coming.
"heh, silly kitty! pooping your diapers is what good girls do! here, I'll show you!" 
Diana of course had secured more doggy diapers for the big kitty so would of course change her after, but brought her down to her knees, Diana in the same position and held her hands, bearing down and puffing out her cheeks.
it was after all, the least she could do to show her kitty baby princess how a good princess filled her diapers after all.
as the farts escaped and she could feel her load coming out, she opened her eyes and smiled at Cheetah who was shaking her head no and mewing, but even so her own behind was letting loose soft poots.
"It'll go better if you just give in. I promise to change you right away kitty. your my stuffie pet and I'll care for you always and forever." Dianna promised.
"I..I..but.." Cheetah bawled and sobbed, her farts escalating with Diana's own, it was clear they were going to mess in stereo. "I'm a big girl!"
"heh, silly kitty. you WERE a big girl. now poop for me." Diana giggled and locked lips with the stuffie pet.
Cheetah would never be sure if it was just it had built up past the point of no return, or if her new mommy/owner had commanded it, but her tail raised and she did as commanded. 
even as she filled the back of her diaper, Dianna did the same and it got rather stinky but both grown woman, though only thought of as girl if that giggled, something had released in cheetah like it had for Diana and the pair made out.
as they both finished and got back up, diapers droopy, they left to go and find a tea house to have their party in as wonder woman's other enemies took note and either quickly called off plans to attack her.. or pushed them up. 

the end