She walked quickly through the familiar town, ignoring the questioning stares from the ponies passing by, until she got to the library. Reaching up, she knocked with a hoof, then waited until Spike opened the door. The little dragon took one look at her and his eyes bugged out.
 
“Holy guacamole! Twilight, come quick!”
 
Erin heard a discussion in the background get interrupted as Twilight excused herself and trotted up to the door.
 
“What is it, Spike? Oh! Erin! You’re a pony again!”
 
“Um. Yes, I am,” she replied.
 
“And… you’re a unicorn,” Twilight noted, looking at the horn on her head with a confused look.
 
“Yup, that too. There’s also this,” she said, and spread her wings.
 
There was a long, strained silence while Twilight just gaped at her, and then the unicorn shouted, “What the heck did you do?!”
 
“Well,” Erin said, blushing. “I decided you were right. It’s silly to keep going back to Ascent every few months to change into a different type of pony.”
 
Twilight was still gawping at her, and Erin started feeling really uncomfortable.
 
“And, Malachite was a long time ago, so I feel less weird about it now,” Erin continued, but Twilight was still just staring.
 
As the silence dragged on, she started to fidget, scraping at the floor with a hoof.
 
“Are… are you okay, Twilight?”
 
“I’m not sure,” she replied, shaking her head. “I wasn’t expecting this. Why didn’t you say anything last month?”
 
“I hadn’t made up my mind, then,” Erin replied. “Plus, I was having too much fun being stared at by every pony within blocks,” she added dryly.
 
Erin’s previous visit to Ponyville, when the gateway to Earth was last open, had been as a human. News of the humans had spread pretty far, and they weren’t an uncommon sight in Canterlot. But Ponyville was far enough off the beaten path that they still hadn’t seen many at that time, outside of the occasional documentary crew. Her existence had been the cause of a lot of stares and whispers, though no one seemed to connect the visiting human with the mare named Sunflower at that time.
 
“I’m completely speechless,” Twilight said, still staring at her. Then she grinned. “You know, a pony with wings and a horn is usually a Princess, right?”
 
“Oh. Well, that would explain why everypony on the train was staring at me like that. And why Celestia and Luna looked like they were trying not to laugh. Um. Are ponies going to get upset by this?”
 
“Well… probably not. It’s just… wow. Even though it was my suggestion, I can’t believe you actually did this!”
 
Twilight started laughing, and Erin felt embarrassed.
 
“It’s too much, isn’t it?” she asked, blushing. “I should probably go back and just have them make me a unicorn, or something.”
 
“No, no,” Twilight said, forcing her face straight. “No, it’s totally fine.. Princess Sunflower.”
 
Erin frowned at the unicorn in front of her, and Twilight’s lips started quivering. Then she lost it, laughing so hard she collapsed to the ground.
 
“I never should have let you talk me into this,” Erin grumbled.
 
The final chapter of Project sunflower with twilight seeing a Alicorn Erin.
 
Free to use.
 
Fanfic https://www.fimfiction.net/story/5170/project-sunflower
 
Background https://www.deviantart.com/estories/art/Background-Library-3-419410212