Rainbow Dash sat in Rarity's room, wearing a fancy, lace, and expensive dress. Another girl would be delighted by this, but not Rainbow Dash. She hated these uncomfortable dresses. Despite this, she willingly continued to come home to Rarity.
Rarity made her walk around the town in those ridiculous dresses, bring groceries from the store, serve tea and do other house jobs for her mistress.
Rarity rested on the sofa and looked at what she had done today with Dashie. Her eyes sparkled with satisfaction. "Oh, Rainbow, you've never been more lovely!"
Rainbow Dash snorted and folded her arms. "I would rather be covered in mud than wear these girly dresses."
"But you look so lovely! Why don't you like my dresses?" Rarity asked and stood up. She walked over to Dash and came close so that Dash could smell her perfume.
"I do not like looking 'lovely,'" Dash replied sharply. "I want to get rid of these foolish dresses!"
Rarity laughed softly and moved her fingers over Dash's shoulder. "Oh, dear. I do not plan to let you go. Not yet anyway." She bent down and pressed her lips to Dash's ear.
A shudder went through Rainbow Dash.
She quickly jerked away from Rarity's touch. "I've been thinking... Why are you always commanding? Well, you made me follow that 'proper lady' training. I think it's only fair to you to spend the day training like an athlete with me."
Rarity laughed out loud. "Training? Like an athlete?" She shook her head. "Darling, I am a vision of elegance and grace. I have no use for any training."
"But you eat a lot and spend so much time lying around," Rainbow said, gesturing her hand at Rarity's luxurious bedroom. "Your butt has gotten bigger, and I can even notice cellulite is growing. Wouldn't some exercise do you good?"
Rarity smiled. "You are mistaken, dear. My form comes from careful attention moreover a strict plan with spa visits plus good food. I hardly need the training you seem to force on me."
Dash rolled her eyes. "Whatever you say. But you're getting fat!"
Rarity's face grew icy. "That's enough! I do not like your tone. You may need to repeat a lesson of respect and obedience. It seems you forgot that I am in charge here!"
Dash's bravado dissipated under that glare and she felt uneasy. Rarity vanished into the closet.
"I believe you want another gown, don't you?" Rarity said over her shoulder, her voice sugar-coated sweet once more.
Rarity drew out a new cute dress from the closet and tossed it on the bed. "Hurry up, Dash."
Dashie walked to the bed and began to undress. Then she put on this new dress. It was blue, frilled, and laced, with a decollete bodice that showed off Dash's cleavage.
"You are absolutely captivating," Rarity said, circling around Dash. "Now, let's polish those manners of yours. Let's see how you look."
Rarity guided Dash towards the full mirror.
Dash glanced at her reflection and grimaced. The dress and makeup felt alien to her.
"It's... awful," Dash muttered.
"No, darling," Rarity corrected, her hand resting possessively on Dash's shoulder. "Awful is what you used to look like. This," she gestured to Rainbow Dash's reflection, "is exquisite."
Dash didn't argue. She just sighed.
"I see you slouching a little. Let's work on your stance. Straighten up, chin up and shoulders back," Rarity demonstrated her own elegant posture.
Dash tried to mimic the pose. "Like this?"
"Yes, indeed! Kimberly taught you well!" Rarity commended, moving behind Dash and correcting her stance with subtle pressure.
"Remember, dear, presentation is everything. Walk confidently, speak with grace, and always maintain proper decorum."
Dash sighed."Yes, Miss Rarity. I understand."
Rarity rewarded her compliance with a smile, her fingers trailing down Dash's spine. "Good girl. Now, I want you to admire my perky and well fitting ass! You'll do this often now because you dared to think that my ass is fat! I want you to kneel down and say 'Rarity's ass is gorgeous!' Understood?"
Rarity took her skirt and pulled it up slowly. Dash knelt down as Rarity demanded. She liked the sight and especially light blue silk underwear.
"Say it, Rainbow!"
"Rarity's ass is gorgeous," Dash muttered.
"Hey! Not good enough!" Rarity snapped. "Louder, and mean it! I want even Sweetie Belle to hear this!"
"Rarity's ass is gorgeous! Rarity's ass is gorgeous! Rarity's ass is GORGEOUS!!!" Dash shouted, louder this time.
"That's much better," Rarity purred. "Now, I want you to kiss my ass cheeks, show me how much you worship my divine bottom!"
Dash hesitated. She closed her eyes, leaning slowly forward to kiss the silken fabric covering Rarity's ass. It was pleasantly warm, and had the faint aroma of Rarity's expensive perfume.
"Look closely! There isn't any cellulite at all!" Rarity teased, reaching around to nudge Dash's head into her butt.
Rainbow Dash moved back, wiping her mouth with her hand. "I'm sorry for what I said, miss Rarity. Please, Miss Rarity, I was going to do a workout today. And it's really late. Can I go now?"
"Of course not! You don't need those rough muscles. They create a bad look. You are my lovely, humble lady. And I decide what you need! You need my lessons of elegance and manners! Forget about your muscles!"
Dash sighed heavily, frustrated. She hated admitting it, but she liked this cruel domination of Rarity.
Dash understood that to continue arguing would only make her situation worse. "As you wish, Miss Rarity!"
She leaned forward and put her hands on the hem of her blue gown. Then she lifted the hem, revealing her elegant legs. Her knees bent fluidly, one foot sliding behind the other in a perfect rΓ©vΓ©rence.
Rarity felt a surge of pride, marveling at how Kimberly had transformed the once-untamed brute into a modest and graceful lady.
She turned back to the wardrobe, selecting another outfit and coming up with new Dashie's humiliation chores.
---
Rainbow Dash kicked open the door to her home, her back burning from the latest 'training session' that Rarity had put her through. Her entire body still tingled from the corset's suffocating squeeze, the high heels' cruel bite into her feet, and the sheer humiliation of wearing Rarity's ridiculous rags.
She could still hear Rarity's delighted laughter, that sickeningly sweet voice cooing over how "marvelous" she looked while mincing through a series of grace drills.