(Sample Prompt: Extravagant, Genre: Comedy)

“What do you think, dear?” Rarity asked with a theatrical flourish, sweeping her mane to the side of her face with a hoof.

Sweat threatened to roll down Twilight’s brow. “It’s, uh…It’s something.”

The white unicorn chuckled indulgently, pacing back around the three way mirror. “It looks simply ravishing on you, Twilight. You’ll be the envy of every mare in Equestria.”

The bookworm fidgeted, causing many different points on the…thing she was wearing to catch glints of sunlight. Several reflected off the mirror and directly into Twilight’s eyes. Many others left miniature spotlights dancing around the room. Opalescence caught sight of one of the more active light spots and pounced, chasing it across the floor. Twilight did her best to keep the tone of her voice casual. “Isn’t it a little…bright?”

Rarity’s eyes went wide. “Well of course it’s bright! Only the brightest for my friends.”

Twilight’s face hurt from the lockjaw grin she had been wearing. “Oh…yes…” She cleared her throat, eyes darting around the room. “What about…the…” her gaze settled on a teapot, “Water!” she shouted. “How will it stand up to water?!”

Raising an eyebrow, Rarity scratched her chin idly. “Well, the satin and taffeta would not do too well in the rain I suppose, but isn’t this little event taking place inside?”

She struggled to keep her voice even, unwanted memories of Applejack exclaiming, ‘galoshes!’ running through her head. “You…never know?”

“Well, if you’re that concerned I’d need to make some alterations.”

“Oh darn,” Twilight breathed, trying to hide her relief, “I guess I’ll just have to wear the Gala dress, then.”

A dramatic gasp escaped the fashionista’s lips. “Oh, absolutely not, dear! That old number simply would not do; you must shine like a star!” A flurry of materials and tools floated around Twilight’s head in a haze of light blue, pulling and tugging, poking and prodding. Humming as she worked, Rarity chimed, “We’ll have this dress waterproof and twice as bright in no time.”

“Yay.” Rarity failed to detect defeat in the purple mare’s tone.

Author's Note

Written to launch the Flash-Fic Prompt Tag game in the Writer's Group forums. The 'prompt' was one I got by cribbing off a used Appledash prompt tag prompt. I went with comedy as the genre, because I love comedy.
Restrictions: Four hours to plan and write, 100-500 words, must be comedic.