Rainbow Dash fidgeted as Rarity adjust the silk corset that framed the blue pegasus' body. "Hold still, Rainbow Dash!" the white unicorn scolded. "If you moving around, like that, you're going to get prodded with a pin.

"Yeah, yeah. Whatever," Dash huffed. Normally, she didn't model for Rarity, unless she was getting something made specifically for herself. But, she just so happened to have the same build as the designer's current client, and Rarity had begged and pleaded with her to help with it, before offering her a pair of tickets to see the Wonderbolts, in exchange. But, Rainbow now wished she had known what exactly it was that she was going to be modeling with before agreeing to help.

Rainbow Dash had a huge fetish for lingerie. She loved how the sexy attire looked on her boyish body. She knew she didn't have the most feminine figure, and lingerie accentuated her assets in a way that made her feel attractive. She was currently modeling a corset, stockings, and thong in an ivory that complimented her coat color, and was doing all she could to avoid popping a boner, a task that was made much harder with the fact that Rarity hadn't done the top buttons of her blouse, showing a near-scandalous amount of cleavage, and had decided to go without a bra, today.

"You seem much more anxious, today, than you normally are during fittings," Rarity said, kneeling down to make adjustments to the stockings. "Is everything all right, dear?"

"It's just..." Rainbow trailed off. "Modeling lingerie for you is kinda uncomfortable."

"How so?" Rarity asked, giving Rainbow what she assumed was supposed to be a comforting caress of her calf, but actually came off more as teasing. "It's not like we haven't seen each other wearing less when we go to the spa, together, not to mention what happened last week."

Now that was a thought that Rainbow Dash had definitely been trying to avoid thinking about. That night, Rarity had expertly sucked her cock, and Rainbow hadn't been able to get the thought of those soft, luscious lips wrapped around her dick, since. She hadn't gotten to spend enough time with the white unicorn, that night, and had been wanting more, but didn't know how to approach her about some quick, no-strings-attached sex. With Pinkie it had been easy to ask her if she was interested in a quick romp, but Rarity was different. She was classy and probably not usually interested in casual sex, other than those high society orgies full of ponies she wanted to be.

"You know, Rainbow Dash, there is something I should confess," Rarity said, running her fingers along the edge of a silk stocking hugging Dash's thigh. "You know the client whom I said commissioned this set of sexy sleepwear?"

"Yeah," Rainbow replied. "To be honest, I think it's weird that you can't just have her model this, since you would be able to use her exact measurements."

"Well," Rarity said, looking into a far off corner of the room. "What would you say if I had, oh, I don't know, made up the client?"

"Excuse me?" Dash asked, raising an eyebrow.

"Maybe I was using this as an excuse to see your fantastic frame in something sexy?" Rarity continued, sliding her fingers up the thigh, and stroking the edge of the thong, noticing a twitch from inside the silk.

"What are you talking about?" Rainbow blurted. She grabbed her practically non-existent boobs. "I've got no chest," she said, her hands sliding to her backside. "And my ass only has a little bit of shape to it! Out of the six of us, I've got the worst body. Hell, even Twilight's spell gave me the short end of the stick, literally!"

"Now, don't say that," Rarity purred, rising from her kneeling position, standing a quite a few inches taller than the pegasus. "Your body is lovely," she said untying the corset, and letting it fall to the floor. She caressed Dash's abs, before running her hand up, and pinching a perky, cerulean nipple. She felt something poke her thigh, and giggled. "And there isn't a thing wrong with your "short stick"," she said, pulling down the thong, joining the corset on the floor.

Dash's petite penis bounced forth, earning another giggle from the white unicorn. Rarity pulled Rainbow Dash in for a kiss, while stroking the smooth skin of the adrenaline junkie's cock. As the two broke apart, Rainbow smirked. "Now, don't you feel more confident?" Rarity asked, giving her partner another quick kiss. Rainbow nodded, grabbing a handful of Rarity's thick ass. "Good. Now, follow me to the bedroom."

Rainbow happily complied, watching Rarity's tantalizing tush sway with each step she took, he mouth watering, slightly. When they arrived at Rarity's bedroom, the white unicorn wasted no time in levitating Rainbow Dash over to the massive, king-sized bed.

"Now then, Rainbow, I saw you trying not to stare at these, during your fitting," she said squeezing her D-cup bust. "But, now that you aren't at risk of staining the silk, feel free to stare as much as you like. In fact," she continued, undoing a few more buttons on her blouse, showing even more cleavage than she had already been. "I encourage it."

Rainbow Dash's face had turned a deep scarlet at this point. Her mind was filled with images of Rarity's tits and ass, and what she'd like to do to them. Rainbow was drooling, not even realizing it. Rarity giggled, girlishly. She levitated a tissue over to the horny pegasus.

"Now, Dash, it isn't very ladylike to drool," she chuckled, wiping the trail of slobber sliding from her friend's mouth. She continued to unbutton her white top, letting it fall to the floor. Her beautiful boobs were on display for Dash to view to her heart's content. Rainbow's cock throbbed in excitement, leaking a drop of pre onto Rarity's otherwise pristine bedspread.

Rarity walked towards the edge of her bed, wearing nothing but her black pencil skirt. She turned around and sat on Rainbow Dash's lap, being sure to grind her round rump into Rainbow's eager dick, more pre dripping down and soaking into the fabric. She pulled the pegasus in for another kiss, letting the other mare savor the tender moment. "Now, Dash," she said, breaking away from the kiss. "I will let you do just about whatever you want, so long as everything that comes out of here," she flexed her glutes, squeezing the cock that was nestled comfortably between them. "Goes in here," she continued, rubbing her soft stomach. "Does that sound fair?"

Rainbow didn't respond with words. Instead, she yanked off Rarity's skirt (making a note of her lack of panties), and flipped her into a prone position, her ass, pussy, and testicles in full view of the lusty speedster. Rainbow pulled the the purple tail out of the way, before diving into Rarity's ass, licking her puckered anus.

"Rainbow Dash!" Rarity gasped. "How uncouth!"

Dash pulled away. "S-sorry," she mumbled, sheepishly. "I should've asked, before I-"

"I didn't say to stop," Rarity interrupted in an authoritative tone, giving her butt a wiggle. Rainbow smirked, before resuming rimming Rarity's tight hole. "That's it," she sighed, using her magic to flip her cock out from underneath her. "Don't forget about the rest of my body, darling."

Rainbow, taking the hint, moved her hands upwards, using one to stroke the white cock, her other thrusting two fingers into Rarity's snatch, all while keeping her tongue busy with the unicorn's ass. "Wow, Rarity," she said between licks. "I never thought you'd be so into having your ass played with."

"Well, darling," Rarity panted. "You see when- oh, Celestia, yes! Right there!- when you you've spent enough time with the Canterlot elites, you acquire some special tastes." She used her magic to gently pull her partner away. "Now, wouldn't you say that it's time we moved onto the main event?" she asked, moving onto her back, and spreading her pussy apart, some of her marecum leaking onto her already stained duvet.

Rainbow Dash nodded, lining her cock up with Rarity's cunt. With a single thrust, her short shaft was buried inside of Rarity's wet fuckhole, while the unicorn's own dick throbbed and dribbled precum. Wasting no time, Dash began to quickly pump her thin hips, eliciting moans and coos from Rarity.

As Rainbow Dash humped into her, Rarity stroked her own cock, each throb of her dick echoed in her tight cunt constricting the cock buried inside of her. "Damn, Rarity," Dash huffed. "If you keep this up, I might not last very long."

"Just as long as you make me cum, I don't care when you do," Rarity said, using her magic to fondle Dash's balls.

"Fuck, Rarity!" Rainbow gasped, hammering harder into the unicorn's cooch. Her balls loudly slapped against Rarity's ass, while beads of sweat dripped cascaded from her body.

"Cumming so soon, Dash?" Rarity teased, gripping down her partner's cock. The pegasus could only nod, her eyes shut, tight. "Well, don't hold back on my part. Release whenever you need to."

Rainbow Dash collapsed, her face landing directly between Rarity's bouncing breasts, her thrusts becoming slower, deeper. With a moan that reverberated in Rarity's chest, she unloaded her creamy cum inside the velvety vagina. With a sigh, she lifted herself up, and pulled out, some of her cum dripping out.

"Very good, Dash," Rarity said, giving the pegasus a reassuring pat on the thigh. "But, I do believe there was something you forgot about."

"What are you talking about?" Rainbow asked, before she remembered. She look down, watching her creampie ooze out of Rarity's well fucked pussy. "Ah, gee, Rares! I'm sorry. I forgot how much you love the taste of jizz."

"Well, it's not too late, darling."

"What do you me-" Rainbow began, before realization struck her. "Oh."

"Well, darling?" Rarity said, giving her cock another stroke. "What are you waiting for?"

Rainbow Dash hesitantly leaned forward, nervous at the prospect of tasting her own ejaculate. Taking a deep breath, she dove in, collecting as much of the salty goo as she could.

"Yes!" Rarity yelled. "Keep doing that! Keep doing that and I'm going to... I'm going to-" with a scream, Rarity came, her cum spraying her breasts, face, and mane, blending in perfectly with her coat.

Rainbow Dash moved up, drawing Rarity in for a kiss, delivering a mouthful of her cum, before going back down to collect more. Rarity hungrily swallowed each payload, happily accepting the next mouthful. After five or six deliveries, Rarity's tight pussy was clean, no trace of Rainbow's jizz remaining.

"Well, Rainbow," Rarity sighed, rising from her bed. "This has been fun, but I really have to get to work on some actual orders I have," she continued, removing a few clean articles of clothing from her dresser. "Before doing so, I will have a quick shower. Take as much time as you need to recover, but please, put my sheets in the hamper before you leave." And with that, the door shut behind her.

...

Rarity rose from her work station, stretching out her muscles from being hunched over her sewing machine for several hours. She glanced at clock, noticing that it was well past eight. "Oh, dear, it appears I worked straight through dinner," she said to herself.

She entered the kitchen, and just as she had begun rummaging around her refrigerator for something to make a sandwich with, she heard a knock at her door. "Now, who could that be?" she asked herself, shutting the fridge, and walking to her front door.

She opened the door to find a blushing Rainbow Dash carrying a pizza and a six pack of beer. "Hey," the pegasus said. "I know how you get when you get caught up with your work, and assumed you hadn't eaten dinner, yet. Can I come in?"

Rarity smiled, stepping out of the way. "Of course, darling."

Author's Note

Definitely the last chapter I'll be able to post for a long while. Don't worry, when I return I'll have plenty of content ready to upload.