Discord caused this.
"Hmmm..." Mami bites her lip. She stops as soon as she realizes she's doing it, turning to smile at the mirror instead; her relfection returns a winning smile, turning to pose sideways while holding a flowing long yellow dress against herself.
She frowns and turns to the white haired girl sprawled face down on the bed, whose eyes seem to rest on Mami, but look glazed over. The blonde girl smiles and wonders what crazy ideas are going through her friend's head. Alas, she must interrupts those deep thoughts.
"What do you think, Sabrina?" She asks, turning fully, still holding the dress against herself. "The yellow one... or the white one?" She asks as she turns slightly, hiding the first dress to show another one, a simpler, slightly shorter one.
Sabrina blinks as if coming out of a daze, her lips parting- but Mami cuts in before she can answer, "I think the yellow one might be, well, too much yellow," she turns in a pirouette to stare at her reflection once more, holding said dress up to herself again, "but I think it goes well with my eyes... and hair?" Mami looks askance at the Sabrina in the mirror with a smile.
Sabrina returns the smile absentmindedly and opens her mouth to talk- before snapping it shut as Mami cuts her off again.
"But the white one seems less... pretentious? Lighter, too, maybe I should wear this one? She shifts, bringing the white dress up to bear.
A moment later, she drops both hands, leaving both elaborated pieces of cloth aside to reveal herself in her plain school uniform. "Well, Sabrina? What do you think?"
"You're pretty."
A second passes. Then another one. Then Mami realizes Sabrina's finished talking, at the same time red starts creeping up Sabrina's cheeks.
"T-the dresses are p-pretty!" stutters Sabrina, "on you... I m-mean you look pretty in either... in either dress..." she trails off, Mami's visage having turned as brightly scarlet as her own.
Sabrina slowly lets her head drop down on the bed, hiding her face from sight.
"... Ah, w-well," the blonde stutters back, her lips stretching into a face splitting smile. "T-thank you, Sabrina," she closes her eyes and tries to recompose herself, "I think y-you also-"
Sabrina's head snaps up suddenly.
"I think you're beautiful and will be the prettiest girl there no matter what you wear!" she blurts out.
Mami stands openmouthed, her knees trembling slightly.
The white haired girl gulps nervously, but resolutely maintains her stare fixed on Mami's eyes.
Mami brings her hands to her chest, looking away. She mumbles incoherently for a moment, before managing to say something along the lines of "I'm gonna change now..." and haltingly walks out of the bedroom.
Before she enters the bathroom, she quickly peeks back at Sabrina, both their faces still red as tomatoes.
"T-the yellow on o-or the..."
"White one, definitely," answers Sabrina.
Mami nods, enter the bathroom, and closes the door.
Sabrina finally lets her head drop back on the bed.
"... Eeeeeeeeeeeeeeeeeeeeee..."
She startles when she hears a half-squeaking, half-laughing sound coming from the bathroom- before it cuts off abruptly.
The white haired girl lets out a sigh, and smiles to herself.