"It's ready!" Rarity pranced out from her shop area of Carousel Boutique, several pieces of clothing floating in her smiling wake. "The blouse was a bit tricky to match exactly, and the jeans were...shall we say, 'challenging?' But I've done it agia...what are you doing?"
Rarity paused, mid-prance, eyebrows raised, as her two special clients fumbled about, stammering excuses as they extricated themselves from a tender embrace. Sunset Shimmer, the pony that was a close friend of Twilight - and herself - in another world, was blushing as brightly as her red mane. Twilight Sparkle, a close friend of Sunset's and easily confused for the Princess of the same name and colors, was furiously trying to smooth her mane and straighten her adorable square frame glasses. The two pushed away from each other, Sunset falling off the edge of the chase lounge in an awkward pile.
"I, uh, was just showing her how horns work!"
"She was telling me about Equestria's history!"
"It was to keep me/her distracted from being naked!" They chorused in perfect time with each other.
Rarity shook her head, her smile firmly back in her place. If one unicorn needed distraction from a fashion nightmare, and that distraction involved kissing a close friend, who was she to say anything? She unfolded the clothes while Sunset picked herself up, displaying them. "I believe I have managed to match the descriptions of the human clothing you gave me, and made alteration to, so that they will fit you now."
"Th-thank you...um..." Twilight looked back and forth between the two other unicorns.
"Rarity," Sunset supplied.
"Thank you, Rarity. I means a lot to me! I'm not used to feeling so...exposed all the time."
Rarity stepped up to Twilight and patted the filly gently on the leg. "It's no problem at all! I enjoyed the challenge of it. Making fully body clothing comes up rarely, and to have two at once, and need to mimic the fashions of a whole other universe? Why, I'll be the star of the fashion world for this!"
She giggled and spun around to grab the ensemble pieces she'd created. "Here, these are for you. Go try them on! I can't wait to see how they turned out."
Twilight nodded, biting her lip as she focused on the offered clothing. Her horn started to glow faintly, the aura sputtering unevenly. Slowly and wobbly, she levitated one sock while the rest stayed stubbornly in Rarity's care.
Rarity shared a look with Sunset but smiled with encouragement at Twilight. "For someone that has been a unicorn for less than a day, you are developing very quickly, darling. But...might I suggest that Sunset helps you get dressed?"
"Yeah, I can help." Sunset joined Rarity, taking the rest of the clothing in her aura.
"Just don't take too long, ok? I'll need to assist other customers soon." Rarity winked at Sunset. "If you need me, I'lll be the back room...with the door closed."