A nine part request for  kaafan10 with Rarity and BlueBlood, shocked I know. And for you pony fan's, no this is not canon, this is a fan made art. Now with that out of the way, it's story time.

It was a peaceful and slow busy day at Rarity's Carousel Boutique, she was just sewing some clothes, trying to come up with some type of new hit for the ponies to love and be amazed, but nothing really hit her. That was until a pair of slate hooves covered her eyes.
"Guess who?" The figure asked.
"Hmm, I don't know, is it my foal husband of mine?" Rarity asked, as her eyes were uncovered so she can turn around to see BlueBlood, smiling at her.
"You know me so well." He giggled, as he then planted a kiss on her muzzle. She smiled, as she returned the kiss.
"Thank you darling, I'm sorry to say that business and brainstorming idea's are a little slow, at the moment."
"Maybe you're thinking too hard on fashion, maybe you show focus on something different. Something fresh, something new and eye catching."
"Like your diaper?" Rarity smirked.
BlueBlood blushes a bit. "Yeah, like my diaper. I'm surprised they even have these in adult colt size." He showed it off a little, giving it a little shake as Rarity giggled.
"Well, you do make them work, same as my fancy frilly diapers." She wiggled her diaper, as they then both giggled.
"Mommy! Daddy!" A voice called out.
"Uh oh, our little queen is awake." BlueBlood said, as a small pair of hoove-steps came down the stairs and then towards BlueBlood and Rarity. "Good afternoon sleepy head, how was your cat nap, Beauty?"
"Hehehe, I'm not Opalescence daddy, and I knew I heard you back. Did you have fun at the daycare?" Beauty asked.
"It was alright, the fillies were a 'little' rough and the foals were tough, but not too difficult. The staff even cooed me and called me Bluey." Blue blushed a little red.
"Hehehe! Can we play tug of war daddy? Please! I've been pacing for another round."
"Hehe, alright little one, let's play."
"Yay! can you hold my tiara mommy?" Beauty asked.
"Sure darling, mommy's got it." Rarity answered, as she used her magic to float a tiara off of Beauty's head, as Blue went to fetch a rope. As he was doing that, Rarity smiled at the tiara, remembering the time when she went to the gala. At first it didn't go as she had planned out, let alone get humiliated, but somehow, BlueBlood came back, apologized, and showed her his secret that she honestly wasn't expecting. But in the end, Equestria have been all diapered up by Discord's boredom, and someone every pony was alright with it to the fullest. Soon BlueBlood came back with a rope, and tossed the end to Beauty.
"Really sweetie?" Blue asked.
"I'm Beauty daddy." Beauty joked.
"Very funny darling." He chuckled. Beauty giggled as she began to pull as hard as she can with her mouth, as Blue hadn't even budge from that. Rarity gave a narrow smile, looking at Blue with love as he return a love look at her as well, with Beauty struggling to win.

Poses I used for this:
https://www.deviantart.com/mondlich.....dy-8-580227903
https://www.deviantart.com/bypanda/.....rt-1-506998461

Idea for BlueBlood being a foal at heart:
https://www.furaffinity.net/view/18781052/

Beauty Info: The most fashionable pony in all of Equestria, married to the most rude colt since the gala incident. BlueBlood soon apologized to her, once she found out about his trips to Celestia, and of course spying on him. Soon he told her everything from his parents, how he was treated and why his trips to Celestia for foal time was actually helping him learn and behave. Rarity soon married him for his newly changed personality, and soon enough had a foal for them both to raise. Thankfully Blue's foal time helped rarity how to raise an actual foal, otherwise she'll be in a pickle. Beauty is highly skilled in fashion sense and clothes making like her mother, however she enjoy's being a foal like her daddy, and shows off how strong she is with her favorite game, tug of war. Her body is white like her one, however her mane and tail are mixed from her parents, giving a striped blonde style to it, and her eyes are actually from her dad, light blue. She also has some ruffle back hooves like her daddy, and she does enjoy sporting them from time to time. However she happened to have Rarity's drama mode, so be sure to not take her crown, otherwise drama mode will be engaged.