The tiara is just so beautiful. Its shining obsidian surface feels so smooth under her fingers, and the blue heart-shaped gem on the front is...well, its exactly like her cutie mark.

Wasn't she doing something?

Cadance tries to glance back towards the door, but her eyes stay glued to the gemstone. It must have been made for her, she thinks, given that its such a perfect match. She bites her lip, tracing her thumb across its surface. It sends tingles up her arms, and she ruffles her feathers, trying to remember how she found this beautiful thing.

If its a gift, she should wear it. Its only polite.

Where is she...? This isn't a room of the castle she's been in before. This is...

This is a gift. A beautiful perfect marvelous gift. She should wear it.

Rubbing her thighs together, Cadance slowly turns the tiara around and places it on her forehead. Instantly, a moment of clarity hits her, a sudden 'why in the fuck did I do that', but it passes quickly when the pleasure begins.

Her knees hit the floor, and she feels her clit come alive with electric sensation. When did her hand end up in her panties? Looking down at herself, she watches a button pop off of her blouse and bounce off into the distance. Her tits are growing rapidly, about to burst free from her top.

"Good! Tits like these shouldn't be contained." Cadance purrs, lighting up her horn to tear off her jeans. A bright pink reflection distracts her, and she glances down at her reflection in the crystal floor. Her magic is glowing a hot magenta, and her lips seem to have darkened to match. She purses them, focusing on their pillowy softness. "Hmm, I suppose I can like, throw out all of my lipstick," She murmurs, running a finger across her bottom lip. She glances at the scraps of jean falling away from her, encased in dissipating clouds of magenta. "Well, it fits me much better than blue, anyway..."

The rest of the buttons tear away with a pop, a loud chorus of clattering echoing across the room. Her now massive love pillows fall onto her stomach, pulling her forward with the sudden weight. Now on her hands and knees, she comes face to face with her reflection - and she loves what she sees.

"Hello gorgeous..." Cadance whispers, licking her massive lips. The soft surface of her lips feels like sunshine to her suddenly very sensitive tongue, its blue forked tip feeling like some kind of second clit. Rhythmically fucking her own lips, Cadance moans, stuffing three fingers into her drenched muff. "Fuck...Fuck, I'm so hot...I'm like the, like, queen of hotness..." She pants, watching her horn darken and elongate in the reflection.

"Wait, this is the. Uhh. Crystal Empire. Fuck...I'm the motherfucking Empress." Cadance pulls herself back up into a kneeling position, quickly getting used to the new weight distribution of her awesome new body. She moves her free hand back, grabbing at her now perfectly plush ass. Feeling something strange, she flicks her tail up over her leg...and finds a strange, thin tail instead of her usual fluffy stunner. It's thinly furred in pink, like the rest of her, and ends in a cute heart shaped tip. A quick stroke along its length reveals that the tail itself is a normal sensitivity, but the tip is extra sensitive, like a nipple.

"Oh, my nipples! Look how cute!" She squeals, looking down at her reflection. Her nipples have grown to match the rest of her massive breasts, their wide, soft areola a sunny yellow next to her pretty pink fur. "Fuck, I am so gorgeous. And I feel so good! Whoever left this tiara here is, like, my new best friend. Sorry, Twily." The tiara in question has settled into her changed features so well, she can't even feel it anymore. It's once crimson gem has changed to a shining magenta, like her magic now is, and its twirling filigree wraps back into her mane and disappears, holding itself perfectly in place. And the pieces closest to her horn have grown, twirling up its length and adding a beautiful black pattern onto her darkened majesty. "I look even more magical than Aunty now!" Cadance purrs, "I bet she would loooooove feeling like this..."

Cadance cant help but picture it, her beautiful and regal Aunt Celestia on her knees, tits even bigger than Cadance's are now, with a massive ass to match. Drooling from thick, pink lips as she fingers herself senseless, her newly enlarged nipples pierced with a golden chain, attached to a big ring in her nose...Moaning and flailing her pathetic tiny wings around, she wouldn't need them anyway...And Luna, too of course. Cadance couldn't separate them, that would be cruel!

Luna would look good in silver, naked save for her chains and jewels, desperately trying to kiss her sister - but their racks are so massively inflated that neither can quite reach with all that mare squeezed between them. Panting and drooling, leaking milk in a puddle on their thighs, both chanting endlessly - "Anything for our Empress, Anything for our Empress..."

Cadance moans, too distracted to see her changes stop and settle with one final alteration - Her yellow sclera and thin, slit pupils. "They'll do anything for me, they'll be so happy...So much love, so much lust, why would anypony want anything else...Fuck, this is like, so hot...I'm so hot and perfect. I'm gonna make sure Aunty sees things my way, and Luna, and Twilight too! Fuck! And my little Flurry!" Slick drips from her like a fountain, dribbling off her fingers and collecting in a puddle on the crystal floor. Cadance is approaching her climax, so close from imagining all her fellow Alicorns joining her in this bliss...But no. She stops herself, forces her hand up towards her face, and gently licks her fingers clean. Its much easier than it used to be, with her fantastic new tongue. Shakily, she gets her hooves under herself, and stands - finding herself to be considerably taller than she remembered.

"The Empress should not ever have to cum alone. Where is that sweet Shiny of mine..." She stalks towards the door, not noticing when the room simply vanishes behind her. Not that she'd care if she had noticed, she has better things on her mind.

Author's Note

First chapter is a lil short, as its just about Cadances initial corruption. Next up we have Shining... The Shining chapter is already in the works and should be published within the next three days, I'm expecting to have it finished Friday.

This is gonna be updated until I run out of ideas. If you wanna help keep me inspired, you can tip me on my Ko-Fi! Knowing my bills are paid definitely helps keep me motivated to write.

https://ko-fi.com/eroticgrotesque

If you tip $5 or more, you can DM me proof and make a request for something to be included in a later chapter!

Such as - "I'd like to see you force-femme shining armor" or "I want RD to get a massive shlong" or "Make Twilight even dumber next chapter!"

Note - Flurry will be in this, but aged up. We're gonna ignore the timeline problems that may cause, because this is porn, and i said so