Sisters and diapers (private)

[sonicmixer]

(So where do you wish to begin?)

[Hana]

(( we could start with Sweetie Bell giving Rarity the spiked drink/Rarity having the accident, I suppose :3))

[sonicmixer]

Sweeite Belle smirked as she silently snuck over to Rarity's absent desk and added a little special ingredient to her drink. At the moment, Sweetie's beloved sister was gathering fabric from the delivery cart outside and Sweeite was taking advantage of it. For she was once again attempting to earn her cutie mark; this time she was trying to see if she was any good at babysitting.. The only problem was that no one was allowing her to watch their little foals. So Sweeite decided to try the next best thing.

[Hana]

Rarity was having a good day, she had plenty of inspiration and all of her required materials were arriving on time. She smiled kindly as she spotted Sweetie Belle by her desk while she was returning with her fabrics, wearing a white floor-length dress today that gradiated to purple towards the bottom. "Hello sweetie! I'd absolutely love to play with you, but big sister has quite a but of work to do today. Shoo, and I'll play with you later." She said gently, sitting at her desk and taking a sip of her laced drink.

[sonicmixer]

Sweeite covered her mouth to hide her laugh and proceeded to head up to her room where she could properly get her supplies ready. This was going to be awesome. She just wondered if it would actually work it not.

[Hana]

Rarity raised an eyebrow in curiousity as Sweetie Belle covered her mouth but just shrugged, satisfied that she had successfully gotten the girl to scram. She got back to her work, and was only halfway done with her drink five minutes later when she felt a slight pressure in her bladder. She originally ignored, deciding to hold it until she actually needed the bathroom, but within a minute later the pressure was extremely strong and Rarity had her hands between her legs, trying to keep herself from peeing. "S-Sweetie Belle, what have you done!?" She screamed, her bladder letting go as soon as she stood up, warm urine rushing past her fingertips and ruining her pretty dress, a puddle forming under her. It didn't stop there thoguh, Rarity groaning and holding onto her desk, unable to keep a warm mess from expanding in the seat of her panties, bulging under her dress.

[sonicmixer]

Sweeite Belle came down, pretending to have a look of shock on her face. "Oh my! Rarity! Did you just make a messy?" She tried her best not to laugh. She made a tsk tsk tsk noise. "You realize that big girls don't make messy's in their panties right? I mean isn't that what you told me a while ago?" She grinned. "And that if that person did mess themselves they should be out right back into diapers?"

[Hana]

Rarity was blushing crimson up to her eartips and looking at her sister in shock, still not quite accepting what she did or why her innocent sister would make her do such a thing. "Sweetie Belle, you will explain to me this instant why you did such a thing and how. And get me a change of clothes while I freshen up." Rarity said sternly, staring at Sweetie Belle and awkwardly walking towards her, her high heels clanking against the floor.

[sonicmixer]

"Me?" Sweeite belied at her with an innocent look. "I didn't do a thing dear sister of mine." She took out a camera from behind her back and quickly took a picture. "You see? Nothing at all. I am completely innocent in all of this."

[Hana]

Rarity gasped as Swettie Belle took out the camera and lunged for it, missing by a wide breadth and throwing herself forward, grunting as she landed on all fours. She grunted as she stood back up, fire lighting her eyes as she glared down at Swettie Belle. "Tell me, what's stopping me from restraining you right here and punishing you for this?" She said, prepared to use her magic if her sister began to do anything else fishy.