Author's Note

Content: F/F, light domination/humiliation and fingering.

Twilight x Rarity: One Size Fits All

"I'm not so sure..." There were three mirrors in front of Twilight all eagerly trying to sell her on the matter despite the blushing apprehension she showed in all reflections.

"Trust me..." the fashionista's long, nubile fingers clasped over her friend's shoulders, messaging with soothing wrings. She was a masterful saleswoman.

The reflections were rather convincing, there was no denying that. From the sheer fabric's risque design draping over one shoulder and looping around Twilight's slender frame, to how she could only imagine it if she wasn't demonstrating it over her regular clothes beneath it. But no more convincing was the piercing leer three Raritys gave her via the vanity. A cocksure, honest stare that told Twilight that this woman saw potential in what she had on, and just maybe wasn't trying to make a sale alone.

"Well... Are you sure it's really 'me'?"

"Oh darling, of course! Asymmetrical wraps are all the rage these days!" The coaxing raps Rarity plied against Twilight's shoulders eased the idea all the more into her, though it did seem a bit much. The dress seemed more akin to swimwear, not evening attire. Her face flushed just thinking about wearing it to a party; the way the sheer fabric wrapped on itself and merely supported her bust made her feel her girls were libel to just roll out! "You would look positively delectable in it. The object of everyone's eyes."

The purred words brushed at the nape of Twilight's neck, sending pinpricks across her skin. The librarian took a hard swallow of the dry lump resting in her throat before she croaked out a nervous laugh. "Y-You've made a believer out of me, Rarity! Yep! I'll take one!"

Devilish. Pure devilish, and Rarity relished in it with a delighted hum of a giggle as she ripped herself away from her client. Of course Twilight would look absolutely to kill for in that dress—it would be harder to find something her petite, adorable physique wouldn't—so a little light embellishing wouldn't hurt. As of yet, nobody dared to buy this stunning piece that Rarity and Sassy had worked so hard to create. It would revolutionize the late-night scene across Equestria... If only they could get over that nasty bit of triviality that was 'modesty'.

However, with Twilight—a regular personne à connaître—displaying it at some grand gala or even a local soirée, people will no doubt come in droves to have one for themselves. After all, not only is Twilight a who's-who in many social circles, she is also a well known practitioner of modesty. Such a devilish plan indeed.

"I simply knew you would make the right choice, Twilight. Come now, take that off so I can fit you for a much more personal cut," Rarity flew across the workshop floor with all her unbridled glee to fetch her measuring tape and notepad.

"Wait, what?" Despite her surprise at having to go through a fitting now, she followed instructions and got to work unwinding the dress from over her normal clothes. A bit cumbersome as fabric caught against fabric, but she was careful not to rip any part of the already sheer cloth. She was already in line to buy one dress, she didn't need two on the receipt. "I just assumed—"

"Twilight-darling, please..." Something about the way Rarity cut her off and spoke with such certainty made Twilight button her lip in an instant, "You are a treasure. A brilliant, awe-inspiring diamond even among gems. I would not be doing my job of accentuating your beauty if I simply let you leave with something off the rack," the phrase was bitterest poison on Rarity's tongue as her nose scrunched in disgust, "It must be as perfectly fit to your contours as much as those contours are perfectly fit..." Honeyed words burned the ridges of Twilight's ears, but she was not going to complain.

"Uh-hah-okay. Sure. Makes sense, I guess," Twilight gently folded the dress and draped it over one of the vanity mirrors for safe keeping, "But, how many dresses have I gotten from you over the years by now? I can't imagine you don't already have every measurement you need."

"But of course I have your measurements on file," Rarity confirmed the point as she strode back over to Twilight, tape rolled free and lofted between her hands, "But it's also been so long since your last fitting. And I certainly would not be doing my job if I didn't make sure you haven't gained or lost any sizes." Though a cursory glance did imply that Twilight hadn't lost any of her physique; she was still fit, slim, and undeniably attractive. "Now then... I do believe I instructed you to take it off."

A blink followed a pause as they both stood there; one expectantly, the other temporarily off her guard. The instruction had to actually set in for Twilight as the realization lagged behind. When it finally settled in, her face flushed a deep pink, her arms rising up to cover her modesty which was already well preserved by her clothes. "B-But I don't think that's—"

"A precise measurement for this is all but required, Twilight, lets not be prudish. Come now, strip away for me, darling," Rarity's tone invoked both sincerity and command. Twilight unconsciously flinched as Rarity snapped the length of her measuring tape taut, falling in line with the order as she started to disrobe.

All the while the anxious Twilight discarded her attire, Rarity watched with rapt enjoyment. With the modest sweater and slacks out of the way, the soft, inviting contours of Twilight's body were on a much finer display; even with those pesky underpants obscuring further treasures. Still, the gentle plump of Twilight's rear and none-too subtle curves snug at her chest did not need a full display to be taken pleasant note of. "Very good, Twilight, very good, now..." Rarity went to work, scooting in a hair's breath from her client with tape in hand.

Pins and needles trickled down Twilight's exposed skin as she felt the fashionista's nubile, professional hands expertly slip across the tan expanse of her form. The gentle tap of one end of the tape chilled against her skin, only for the invasive caress of Rarity to glide over it. The proximity provoked a slight gasp from Twilight, if only from the chill of the tape. Though that was clearly not the sole reason for the blush that ran across her cheeks and down her neck. A blush that Rarity took welcome note of as she took the first few notes of Twilight's measurements. "Oh... Do you like that, Twilight?" Rarity quirked a curious brow that Twilight saw in the mirror, all too anxious to move beyond the subtle nudges Rarity invoked with her taps. "The way I..." Painted nails traced along Twilight's hips, summoning a muted, shallow gasp from the woman, "...Touch you, darling? Or..." Rarity indulged herself in a little play with her friend, trilling the word just against the bashful woman's ear, "Do you like it when I tell you what to do? How to make me happy? Such a people pleaser, Twilight."

Words were weighted knots in Twilight's throat and they all dribbled out as incoherent 'ums' when she tried to voice them. The two vanities looking back at her only worsened her flushing red as she saw herself near exposed with a dear and close friend running palms across her body. All for measurements, of course. But to see it, like watching a stranger's intimate moments, made her heart flutter and arousal churn. "On second thought, Rarity, maybe I should come back—"

"Inseam, Twilight, come," Rarity would not allow her client to protest, already rolling her tape up to prepare for the next step.

"I-I don't believe the dress really calls for an inseeeeaam!" Twilight lost her words and balance when Rarity palmed her back, nudging her forward and forcing her to press her palms against the vanity to keep her steady. In the same motion, the bold fashionista lightly tapped the inner soles of Twilight's feet to push them apart. As the cool glass settled against Twilight's palms, she was given a good look at the exposed position she was in at Rarity's behest. Her back arched and legs splayed wide enough to display her 'assets', but firmly supported to not worry about toppling one way or the other. Twilight met herself face to face—amethyst eye to amethyst—and she felt her nerves wind with the expression she saw in herself.

Pleasure.

"Good girl, Twilight. I do so enjoy the erotic poses you make for me," She teased, knowing full well she was the one who put Twilight in such an exposing position. But given the wiggled smile on Twilight's face, the flexing fingers moving into balled fists, and the subtle sway of the woman's hips, she wasn't expecting any sort of correction. Then a devilish idea slipped into Rarity's mind. A very naughty thought she simply could not pass up on. "Let us attend to that inseam, shall we? Do stay perfectly still..."

Twilight fought against herself as her nerves commanded her to wrest herself from the situation and pull herself up; but Rarity did order her to stay still. And she was a people pleaser, it would be rude to disobey. Even so, her hips wiggled slightly, and her elbows knocked as they struggled to not go limp. She did not need to be touched, it seemed, as just being spoken to in that way only Rarity could manage did something to her. Those thoughts could not linger for long as every sense of attention drained from Twilight and she coughed up a heated moan, fogging the reflection just before her in the process. Her mind was sent reeling as Rarity had peddled her trade of checking the librarian's inseam, stopping not at the height of Twilight's inner thigh, but coming to rest the span of the tape and the curve of her palm over the plush of Twilight's ass.

Such a motion alone would not put Twilight in such a state, but the two fingers sliding down to split Twilight's sodden petals just beneath her panties was more than enough. Gasps and heated groans poured free of Twilight as she pushed herself further against the vanity, rattling the mirror in its place in vain to move away from Rarity's attention. Wordlessly, Rarity continued to lather her fingers against the drooling passage, using Twilight's now soaked panties as a flimsy divide to keep Twilight from enjoying the full contact.

"Twilight dear, you really must stop squirming about. I won't be able to finish at this rate," Not that she expected her friend to be eager to finish anytime soon. Her middle finger rolling down the slit, rubbing with an ease at Twilight's hidden bulb while peeling her apart to soak through the undergarments all the more. Each press and prod elected another heated squeak of repressed delight from Twilight. Amidst her heated indulgence of Rarity's effortless work, Twilight moved to prop her elbows against the vanity and rest her burning cheek against the fogged over expanse.

"I-I... I can't, Rarity, I can't—" Twilight shook her head as she tried to deny herself that last release of her modesty, but felt it snap as her eyes crossed and her jaw tightened, "Ohhh-fff..." She hissed and bit her tongue, not allowing herself such a profane pleasure as cursing; that would be too much. But burning lips pressing against a mirror, breasts barely hanging behind a loosened bra, pussy convulsing under the care of a dear friend, and cumming openly in a place of business? That was well and good.

Rarity dragged the glazed fingers to her lips, licking across the glistening nectar with a satisfied purr. The cat got her milk, and the dish was very pleased for the effort. "Such a naughty little thing you are, Twilight. I was merely taking your measurements, and now I believe we've come to learn quite a bit about you... And I love it," an almost manic smirk crossed Rarity's now Twilight glistening lips, though she just as quickly shed herself of it and took to a more proper posture. "That's all well and good, and we will have to explore that further... But I really must be attending to other appointments. Oh, darn it. Right when I found something very entertaining..." She huffed and started back to her work table to return her barely done notes and love-soaked tape.

Twilight was barely present as she slid down the vanity, leaving a small streak of her saliva down it before she ultimately collapsed onto her knees. They were both jelly and her chest was heaving, but she took the small moment of solace for what she could. She was ashamed, aroused, awakened, and weakened all at once; though she was still able to make out Rarity's words. Despite whatever shape she was in, she couldn't linger here and risk being seen in this state. What would people say? What would they say...?

Invasive, lurid thoughts aside, Twilight did her best to pull herself back to her still weak feet. Slipping her slacks back on was a chore, and at several points feeling the fabric against her hot-to-the-touch skin made her hum a dull pleasure. Slipping on her sweater however had her coming out the other end to a surprise: Rarity back before her with a small package in hand. While the fashionista found no trouble meeting her eyes with Twilight's, the amethyst orbs or the shy bookkeeper fled to look at near anything else. "So uh... I guess we'll finish this—"

"Tonight. And do wear this until then, darling... I'll know," Twilight's already warmed skin shivered under the commands of Rarity; such sublime authority did terrible things to her, and she simply nodded a dumb 'uh-huh' in response as the small package was shifted over to her palms.

Rarity tapped her lips against the very corner of Twilight's lips, giggling a charming tone as she indulged in her own blush. Knowing the risk of being spotted in her clearly flustered state, Rarity ushered her dear friend out the secondary doors of her workshop. Outside the mid-morning hustle of the streets was in full effect; milling townsfolk were carrying on their days and sharing their own brief conversations. How many of those people passing by in the streets did something just as entertaining as they had? The town would be a much more enthralling place if they were.

Twilight made her way down the side-stairwell, taking brief glances between the busy streets and Rarity; each step bringing with it a slight bit of her vigor back after the interesting fitting. When she made it to the offshoot of the main road, she offered a dainty wave towards Rarity before she slipped back into her shop. One could wonder if all Rarity's fittings were so entertaining, or if Twilight was just lucky. Or unlucky, depending on how you looked at it.

Twilight saw it as luck, regardless.

Before she could join the thoroughfare of people, she steadied herself with a few slow breathers. Her palms patted at her cheeks, trying to lose those last bits of lingering lust still flushed in her cheeks and wanting in her eyes. Not now, not in public. But maybe tonight...

Tonight. Twilight curiously looked at the box that Rarity slipped in her hands before escorting her out. "Do wear this until then, darling... I'll know" It was an ominous warning, and an odd request. Still, Twilight couldn't deny it at this point. It would just be rude not to follow the instructions of a gift, clearly. The box was simple, a far cry from Rarity's usual fair of elegant ribbons and meticulous wrapping; though it was likely fashioned on a whim after the two's little affair.

The top popped open and Twilight shifted it just enough out of the way to get a good look at what was inside. She thanked herself for doing this off the road and away from prying eyes once the contents were made known to her. While undergarments were not wholly unusual for Rarity to gift Twilight or any of their friends—Rarity took pride in sharing all forms of wares for her friends to enjoy—, but the extra apparatus adorning it brought a shiver to Twilight. A delightful chill at the implication. "I'll know..." The way the vibe curved inward rather than outward told a clear intent for Twilight to follow and endure until tonight.

"Oh boy..."