The complete package that wants to be touched.

There were a lot of clothing-related fetishes that could be fittingly applied to Rarity. There was just one big problem: Isaac wasn't into any clothing-related fetishes.

Latex, rubber, and spandex? Isaac had always found skin-tight materials to be more sweaty and clingy than smooth. Leather? Isaac preferred a gentler touch. Silk and lace? Better to work with, but sometimes they were so nonexistent that it hardly seemed worthwhile to consider them a fetish. Clothing in general could always be changed - it was the fundamental person and body beneath that Isaac had a unique opportunity to transform and explore.

Bondage? Isaac had a bit of a claustrophobic streak and couldn't avoid empathizing with anyone unable to move. Costumes, cosplay, roleplay? Better to work with, but as main kinks for day-to-day Isaac wasn't thrilled with them. Stereotypes and play-acting didn't tickle Isaac's need for adventure and escapism - he wanted fully fleshed-out sexy people, living in a sexy world, or else it was hard to enjoy them. Besides, if he had the power to warp reality, what good was cosplay if he potentially had the power to bring those characters to life?

Oooh, now that was an idea to save for later... Isaac could think of a lot of fictional crushes that he'd love to bring in on the fun in this world...

But right now, the focus was Rarity. And after much internal debate and whittling down options, Isaac finally settled on some concepts that he overall liked that would hopefully keep Rarity unique after he was done with the 'mane six.' Pacing outside of Carousel Boutique, he started murmuring questions under his breath.

"Is it true that Rarity has a perfectly balanced but very well-endowed hourglass figure, a super-thin waist, long shapely legs, and especially full plush lips for a mare? Is it true that all skin, fur, scales, whatever for sapient creatures of this world is naturally smooth to make outercourse enjoyable without requiring extra lubricant and without being too slippery, and Rarity's skin is even more especially smooth and velvety to the touch even by those standards? Is it true that pony manes and tails are full, soft, pleasing, and durable in almost all conditions, and that Rarity's mane and tail are incredibly soft, smooth, and sensual to touch by those standards? Is it true that Rarity's greatest Master-related fantasy is to be touched and groped and fondled and played with across every inch of her body like a life-sized doll, up to and including her Master masturbating onto her?"

He kept forgetting to breath during his barrage of questions, Isaac realized as he gasped for air. He just got so excited and carried away with the reality-warping that he couldn't stop adding details. His brain almost went into a trance as it fully engaged his natural desire for control. One of these days, he was going to need to take a breath between sets of questions.

For now, though, it was all fun and worth it. Nothing outside of Carousel Boutique had changed, but he knew that inside, it must have changed a lot.

After what felt like ages waiting outside and tweaking reality to his liking, Isaac finally opened the door to Carousel Boutique and entered. A little bell above the door rang, alerting the proprietress to his presence.

"Hello there!" came her sweet accented voice from somewhere he couldn't see. The colorful shop was full of clothing racks full of dresses, mannequins of various sizes and levels of endowment, and various platforms, curtains, and mirrors. The fashionista was probably behind something. "I'm helping out another customer right now, but I'll be with you in a moment!"

"Uh, sure thing!" Isaac called right back casually, contenting himself with looking around at the kind of shop he would never actually use himself, since he didn't need any fancy dresses anytime soon.

There was a pause, as if his voice had startled her for a moment, but then she got right back to being professional. She seemed to be behind one of the long round curtains blocking off a show platform. "Th-There we go, you're looking pretty as a button, my cutie-wutie! Oh, I don't see how any potential Master could possibly keep his hands off you while you're looking like this, so squishy and cute and oh-so-gropable! That polish really brought out the natural shine of your scales!"

A somewhat high-pitched but overall raspy voice replied, "Thanks, Rarity...! You're the best, as always! I don't know how I would've figured out half of this stuff before I met you...!"

"Hmhmhm," Rarity's voice chuckled behind the curtain, "well, Twilight's knowledgeable about a great many things, but some things require a professional's touch. All the same, I'm glad you've trusted me on this journey of yours. Now let's go show off that draconic derriere, shall we?" The curtains finally opened with a wave of blue magic, and Rarity emerged just as Isaac had described her - leggy, impossibly hourglassed, pouty-lipped, with an utterly radiant white coat and coiffed violet mane - wearing little but a frilly unbuttoned blouse and a short black skirt. She stood just about half a foot taller than Isaac, most of that in her shapely white legs. "Welcome to Carousel Boutique, where every- oh!" She gasped upon seeing Isaac, her cheeks flushing and her breath gasping with the obvious possibilities of a real male before her.

"Something wrong...? W-Woah!" Her previous 'customer' emerged from behind her. Standing at only four feet tall was a purple-and-green young dragon, none other than Spike. A very, very bottom-heavy Spike, at that. Admittedly, his flat chest and boyish facial structure were the main signs that he was still male - his face was made up in a feminine way not unlike Rarity's, his ridge of green head-scales was curled to one side, his body scales were polished and glittering in the shop's light, and he was wearing something resembling silky harem gear - sleeves and a waist-gown tied together with bright strings, see-through and gauzy enough to see his pale green panties and the modest bulge contained within. Spike, who'd seen more of Isaac than most people before all this reality-warping nonsense, waved at him sheepishly. "H-Hey Isaac! Back from Canterlot, right? What brings you here?"

Rarity looked like a million possibilities were flitting through her mind as she stared at Isaac, all of them so overwhelming that she might swoon on the spot. "Y-Yes... What brings you here, indeed...?" she murmured hopefully, one hand toying with the measuring tape draped around her neck.