A Thin Line

by Scorpan

Dress-up

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Rarity didn't have much work today, having mailed her previous design off to Canterlot for review. In her boredom, her mind couldn't help but turn to thoughts of the previous night, and the absolutely joyous sensations she had experienced. She was so happy when she awoke this morning to find that it wasn't a dream, that they had all really done that together, and they were willing to continue with their... relationship?

That was still a point of contention among them. Rarity didn't know what to call what they had, but it was an undeniably strong bond. She loved the way they treated each other that morning. Even though they were all naked and still smelling like a clop factory, they still managed to behave with respect towards one another, Pinkie Pie and Fluttershy had even been thoughtful enough to cook breakfast! Oh, the thought sent her heart a-flutter once more!

Nothing had really changed drastically, their friendship had simply grown deeper. They would've handled that morning almost the same way had they not done those things; Fluttershy and Pinkie cooking breakfast (and dessert), Twilight, Applejack, and herself cleaning up the mess from the party, and Rainbow Dash conked out on the floor, lightly snoring away and apologizing bashfully when she woke up, realizing she hadn't been able to help.

It was the same friendship, just more of it.

With that thought, Rarity's mind turned to the deed itself. What were they to call it? Surely there was a name for it better than 'group masturbation' or 'communal clopping'... maybe Celestia would have the answers, Twilight had sent a letter to her about the event, and was sure to receive a prompt reply.

Still, Rarity was faced with nothing to do. She figured that if she finished all her work the week before, she could take a slow week to relax, but now she didn't want to relax, she really wanted to see her friends again!

She wanted to do it again.

She didn't know how to go about re-creating last night's atmosphere to ensure they had a good time, though, and she was afraid to simply approach and have an awkward conversation something like:

'hey, remember last night?'
'yeah'

'wanna do it again?'
'yeah'

She just didn't see how it could possibly work!

"UUuuhggghhh" She finally sighed in frustration. "Opal, watch the store while Mommy's gone, I have some talking to do." And with that, Rarity stormed out of her shop and flipped the open sign to closed on her way out.

"Oh come on!" Shouted a distressed mare who was just about to enter.

Rarity paid her no heed, she was a mare on a mission.


Pinkie Pie was having a slow day. To make up for the time she had to take off to help prepare Twilight's slumber party, she decided to bake ten times as many pastries as usual that day. While that was plenty to tide the Cake's over for the next week, it left Pinkie Pie bored being told that she couldn't bake any more due to the Cakes not having enough room to store more sweets.

She didn't even have to mare the counter today, Mrs. Cake was already there, taking orders, leaving Pinkie to sit beside her and be bored.

Luckily, she was saved when a familiar silhouette graced the doorway. Only Rarity had curves like that! Rarity stepped into the building, a fiery look in her eye, and it was directed straight at Pinkie.

"Mrs. Cake, dear, can I borrow Pinkie Pie? I need her help with something back at my shop." Rarity's voice was surprisingly calm considering her expression.

"Why, of course, dearie. Pinkie worked so hard to give us enough sweets to make up for her being gone yesterday evening, I daresay she made too much! She should be able to take the whole week off, if she wants to." Mrs. Cake assured her.

Pinkie jumped at the opportunity to leave this boring, non-baking zone behind and see what Rarity was up to. Neither spoke until they exited the shop, heading back to Carousel Boutique.

"Hey Rarity, what's up? You said you needed me for something?" Pinkie Pie inquired.

"Yes, Pinkie Pie, I do indeed need some... help... with something, and you're just the mare for the job." Rarity replied ominously.

"Oooh, sounds important!" Pinkie seemed oblivious to Rarity's advances.

Rarity's thoughts were a whirlwind. She needed the pleasure that only this mare could give her right now, but she didn't know how to get it. She didn't want to force herself on Pinkie or make it feel unnatural. If they had a bad experience, than all future encounters could be tainted by it. She needed it to happen naturally, just like last night.

As she thought of last night, she had an inspirational moment in the form the memory of the first time she had thoughts like this about one of her friends; when she was dressing Twilight up before the party! It was a brilliant plan.

They entered the boutique, Rarity dragging Pinkie upstairs by the hand into her private bedroom.

"Alright Pinkie, we're going to play... dress-up." Never had those words sounded so sinister.

"Ooooh, I like dress-up. You have anything radical to wear? I'm in a Rainbow-Dashy sorta mood today."

"I'm afraid not, but I do have something that's rather... risque." Rarity pulled the only thing she could create with the thoughts of last night on her mind out of the wardrobe. It was an ensemble that covered the body in lace, but left the more... sensual areas exposed. It was composed of lace that formed a lattice across the stomach, and sported a corset that supported the breasts, but didn't cover the nipples. On the lower half, it had a pair of lace panties, but they were much more revealing than a traditional pair, with a hole to allow the marehood to poke through, and a garter attached a pair of silk socks to the ensemble. The whole thing was a very sensual purple and black color scheme.

'I'll need you to strip for me if you want to put it on." Rarity had a hungry look in her eye.

"Okie-dokie-lokie!" Came Pinkie's reply, and in record time she had shucked off her simple outfit, baring her body before Rarity.

She flushed at the sight. "Yes, there's the feeling I've been seeking." Rarity thought to herself.

It was designed to be worn by first donning the panties, then slipping the socks on and attaching them via the garter for support, then securing the corset/lace combo around the torso from the front, since it unzipped in the back.

Rarity walked over to the nude Pinkie Pie, who was smiling, and set down everything except the panties. Next, she kneeled down in front of Pinkie, bringing her head level with Pinkie's waist. She instantly had more flashbacks of imagery from the previous night, except this time it was from the front.

She was staring directly into the pink party pony's marehood.

She averted her eyes and reflected on what it truly meant to be attracted to a mare. The way her thighs flared up into wide hips and then thinned back into her flat stomach, creating a sensual image, but not overtly so. She noticed the way Pinkie gently swayed side to side, practically inviting her in.

It was undeniable, she found Pinkie Pie very enticing.

Her eyes were drawn back to Pinkie's marehood. She drew closer and inspected the folds. They were similar to her own, but different in several ways. She almost wanted to reach in and dig deeper. She noted how it looked almost like a pair of lips. Briefly, an image flashed in her head of herself kissing Pinkie Pie's vagina, and she laughed out loud.

"What's so funny, Rares?" Pinkie asked.

"Oh, nothing darling, just a silly thought." Rarity brushed it off. "Now, let's get you into this thing."

Pinkie Pie lifted one leg and then the other, just like Twilight had last night, to allow Rarity to place the panties around her legs and then begin pulling them up. She slid them up slowly and sensually, ensuring her brilliant white fingers stroked the soft pink fur as gently as possibly during their ascent. As Rarity's hands reached Pinkie's thighs, she was sure she had heard Pinkie make an "ooooh" noise, but she did a good job of hiding it. Rarity smiled at the thought of bringing pleasure to her friend, even a small amount, and pulled the undergarment the rest of the way up.

Here is where the similarities with last night ended; this naughty piece of night-wear (Ooh! That's a good idea for a name!) didn't cover her slit, and instead left it bare to the world, accentuating it, in fact, by hiding the skin surrounding it. It had the desired effect, making it difficult for Rarity to draw her eyes away.

"Huh, you know, Rarity, this doesn't cover my... well... you know." Pinkie observed.

"Yes, my dear, you'll understand once I get the whole thing on you." Rarity replied simply.

Next was the Stockings and garter. These had to be done in a specific way. First, Rarity attached the garter to the undergarment with little difficulty, then repeated her actions with the panties by slowly drawing the first sock up Pinkie's leg, earning a definite squeak of approval. When the sock had reached the middle of Pinkie's thigh, she secured it in place with a hook on the garter, then repeated the entire process with the other leg.

It was definitely effective in its purpose, drawing Rarity's eyes to inviting pink curves by virtue of masking other parts of her body. She couldn't wait to see the outfit worn in its entirety.

She rose up, getting a good, long look at Pinkie's breasts, then took the whole top of the ensemble and wrapped it around Pinkie's torso. In order to wrap it around her back, she had to draw their bodies close together. Their breasts mashed together, Rarity's clothed ones to Pinkie's bare ones. Their faces were merely inches apart as Rarity proceeded to zip up the back of the corset. They stared into each other's eyes, just now noticing the heat from their muzzles as they panted and gazed into each other's eyes. As the zipper drew near the top, Rarity surprised Pinkie by quickly doing it up the rest of the way, inadverdently arching her back and drawing them slightly closer. Pinkie's lips were hanging open ever so slightly.

Rarity made the first move.

With her hands still encircled around Pinkie Pie's back, it was quite easy to draw her in for their first kiss of the day. She felt all the sexual tension she had built up herself fall away, and then a raging heat built up inside her to replace it.

"MMmmmmph!" Was the only noise Pinkie could make, and it only made Rarity's flames burn hotter.

She became more aggressive in that moment, and snaked her tongue into her friend's mouth, savoring the taste of her saliva and wrestling with her tongue. Pinkie's head turned sideways to allow her better access.

Rarity was growing aroused, and she could already feel her undergarments beginning to stick to her wet nethers, while her nipples rubbed against the fabric of her shirt uncomfortably. Clearly, her clothes needed to come off.

Breaking the kiss, Rarity reached for the hem of her shirt and then grasped it, beginning to tug it off much like the first time she had stripped for Twilight. She made a show out of it, pirouetting and teasing the pink mare before she finally discarded the top. She hadn't bothered to put on a bra today, not after last night. Rarity began to undo the fly on her shorts, but Pinkie interrupted her.

"No, Rarity, allow me." Pinkie said in a surprisingly lucid tone.

Rarity obliged, standing and stroking her curves while Pinkie Pie gripped Rarity's jean-shorts and undergarments and pulled them down all at once. She was now level with Rarity's marehood. She was left wondering what Pinkie was going to do.

After what seemed to be a moment's hesitation, Pinkie plunged two fingers straight into her sopping wet vagina without warning. Rarity yelped at the sudden pleasurable sensation, and had to tweak her nipples to alleviate the delicious ache. Luckily, both her hands were free. Pinkie then proceeded to stick two fingers into her own marehood, and moaned out loud at the sensation. Rarity couldn't do anything to please Pinkie in this situation so she simply let her do her thing. She was keeping up a fabulous pace, regardless, clearly intent on pleasing her friend.

Their groans grew louder as Pinkie found both of their g-spots and began hitting them consistently. It wasn't long after that until they reached their first orgasms at the same time, soaking their thighs and Pinkie's hands in the process.

Pinkie stood and walked over to the bed, then flopped down on it face-up, legs spread wide and face bearing an expression of content.

Rarity, however, got all hot and bothered again seeing the mare's hips sway and her breasts thrust into the air, supported by the corset of the naughty night-wear.

She wasn't going to get away without allowing Rarity to give back.

She crawled up to Pinkie via the foot of the bed, taking her time to get there. It was Princess-sized, after all. She tried to shoot Pinkie her sultriest look, and it appeared to have the desired effect. She lavished attention on Pinkie's sock-clad legs on the way up, rubbing her body against the silky material, but then she stopped at the pink mare's vagina.

She had a flashback of her thought from earlier that day; the ridiculous one involving her kissing Pinkie's vagina. To her lust-addled mind, this sounded like a good suggestion. After a moment's hesitation, she did it; she simply brought her muzzle between Pinkie's thighs and kissed her marehood.

"Ooooh, Rarity! That felt really good!... Do it again, please?" Pinkie squealed.

Rarity needed no further incentive. She went up to it and smooched again, earning more delicious noises from the mare before her. She wasn't exactly sure what to do, but she just let the feelings flow naturally, and decided to treat it like any other kiss. The vagina really was similar to lips, in some ways.

She began a sloppy sort of make-out session with Pinkie's marehood, earning many coos of delight, but it wasn't enough for her, she needed to escalate. Rarity's tongue snaked out, like it did so often when she kissed one of her friends, and she savored the taste of the mare's fluids from the source...

... and then savored a lot more of that taste as the stream nearly tripled in volume, Pinkie having came instantly with an ear-piercing scream.

"OOooooocelestia, oh my. CelestiaaaaaRarity don't ever stop!" Pinkie was nearly incoherent, but the message was clear.

Rarity's tongue explored her friend's inner folds, leaving behind the surfaces it touched wetter than when she came to them. Pinkie seemed to enjoy this. Rarity next tried a different technique, she swirled her tongue around quickly a few times.

"Aaaahhhh Yes! Yes Rarity! Right there!"

Rarity couldn't help it, the encouragements were turning her on too much. She reached down and slid a few fingers into her sopping wet marehood. The moans generated by her actions only served to stimulate Pinkie further.

It was no surprise when Pinkie came again, spurting out even more mare fluids than the previous two, and the spasms of her body made her vaginal walls contract around Rarity's tongue, trapping it inside and forcing her to continue.

"Yes! Oh Celestia yes Rarity! Don't stop now, I'm so close!" Pinkie egged her on. Rarity couldn't help but oblige.

She brought her unoccupied hand up and pulled back Pinkie's clitoral hood, then, in an adventurous move, went to suck on it. The effect was instantaneous, resulting in Pinkie orgasming even harder and longer than all the previous ones combined.

All she could do was scream Rarity's name. Sweet music to her ears.


Twilight Sparkle had been bored most of the day. After all that transpired the night before, or even that morning, time spent without her friends simply felt like time wasted, so she ended up spending her time thinking about her friends.

She was trying to study, but was getting hot and bothered as images of her friends and their beautiful bodies kept flashing through her mind. Eventually, she simply gave up and decided to vent the tension. She closed up her books, stripped out of her clothes, lied down on her bed, and wasted no time in getting started.

She was already wet; she'd been wet all day, so it was a simple matter to begin thrusting three of her fingers in and out of her vagina, making a light *squelch* noise every time she did so. She moaned as thoughts of Rarity's incredible curves saturated her mind, blocking out all else but the pleasure she was feeling. She was the one who introduced her to this feeling, so it was only natural to focus on her. Those huge, warm, soft breasts, complimented by those shapely hips and sensuous thighs. She was almost impossibly beautiful.

Twlight increased the speed of her fingers, bringing a hand up and stroking a tit to add to the pleasure.

"Miss Twilight! A package for you!" A voice from outside her front door took her by surprise.

"I'll, aah, be right down. Just, ooh, leave it on my doorstep, oooohhhkay?" Twilight managed to gasp out loud enough for the mailpony to hear.

Almost being caught had made her even more aroused, so she came quickly afterwards, the juices of her arousal staining her bedsheets, but Twilight didn't care anymore.

She pictured the location of the package in her mind's eye, and then teleported it into her grip after wiping her hands off on her sheets. It was a letter from the Princess.

"Hmmm, she responded quickly. I wonder why?" Twilight asked herself. She opened the letter and began to read.

Dear Twilight Sparkle,

You have continued to prove yourself quite exemplary, my faithful student. I had been planning to teach you the secrets of making love, but it seems you and your friends have discovered it for yourselves, and for that, I am both impressed at your aptitude and honored to be your teacher.

Perhaps this is a fortuitous turn of events, as you may need what you have learned, and then some, in the coming trials.

I have been alerted to the fact that Queen Chrysalis, the very same one defeated by Princess Cadance and Shining armor with your help on the day of their wedding, has been mustering her forces in the wastes beyond Equestria's borders and is already enacting the initial stages of a second invasion attempt. I don't know exactly what it entails, but early reports suggest she has found a new, more physical way of extracting love from her targets, her changeling army now leaving husks of ponies in their wake that only speak of immense physical pleasure followed by psychological depression. I have my theories, but I will withold them until our meeting.

I want your help with this matter, so I need you to bring your friends to meet me in Canterlot where you may receive a debriefing on your mission. Hopefully, we will have time to discuss your latest discovery, and maybe you will learn something along the way.

Sincerely,
Princess Celestia

Twilight was out the door before she read the last paragraph, and was bolting down the street towards Carousel Boutique, which was the closest residence of a friend to her house.

She hadn't noticed she left without a stitch of clothing on.


Author's Note

Maybe the story will have actual plot after this point?

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