The purple-maned mare rushed into the court, dragging a yellow mare behind her. Stopping halfway, she turned to Fluttershy and said,"Fluttershy, dear, its fine now, nopony's staring." Fluttershy stood up from her crouching position and stared at her surroundings. Twilight sighed and turned around, rushing into the court (again). Fluttershy flew behind slowly.

Princess Celestia sat on her throne, with steely eyes, watching the yellow and purple mare. "I have been expecting you, my pupil. And you, Fluttershy." Twilight and Fluttershy stopped about a meter away from the throne and bowed, Princess Celestia gestured with a hoof for them to stand.

"Yes, Princess. Pinkie has been going through some strange chang-" Princess Celestia interrupted.

"I know."

"How?"

"Sigh. I knew this day would come. After all these years of suppressing her, she still managed to break through.

"Her? her who?" Twilight cocked her head to the side, sounding like an owl. "Pinkie?"

"Close. But not Pinkie Pie," Celestia shook her head and said with a grim voice,"Pinkamena Diane Pie."

Fluttershy gulped. I have a bad feeling that it wasn't hormones that caused Pinkie to do that just now.

"-giggle- Princess, Pinkie is Pinkamena! Pinkie is just a nickname!" Twilight giggled

"Oh dear Twilight, you are far mistaken. Maybe it's time I tell you the truth. A long time ago, my father and mother had three daughters, not two. And one of them was Pinkamena Diane Pie. Yes, this means that Pinkie is a Princess. In fact, the oldest, the most powerful, she was able to raise both the sun and the moon. She was a kindhearted, loyal, generous, honest, magical, laughing bundle of joy who was loved by ponies far and wide. However, when Pinkamena was 500 years old, Discord came. Pinkamena tried to stop Discord by herself, but he was far too powerful. He corrupted Pinkamena, she then turned on the town, ponies went crazy. Chaos everywhere. Luna and I had to stop Discord, if corrupted Pinkamena was not stopped, the world might be in peril. We defeated Discord, like in the glass," Celestia points a hoof at the stained glass picture of Celestia and Luna defeating Discord.

"But, Pinkamena remained corrupted. I had no choice but to turn her into an earth pony, no magic, no wings. Turned her into a foal and handed her to Mr and Mrs Rock."

"It's Mr and Mrs Pie, Princess Celestia." Fluttershy tried to correct her.

"Actually, Mr and Mrs Rock, I asked them to change their names to Pie. To fool Pinkamena. Then, I used all of my strength to wipe anyone's memory of Pinkamena being a princess. All these years, Pinkamena became Pinkie. Pinkamena is still trapped inside Pinkie, no doubt, trying to escape and become an alicorn again. So the times when Pinkie is mean, its actually Pinkamena at work."

The yellow mare stared at Celestia with big eyes,"So that's why Pinkie was so mean to me just now! Oh p..p..Pinkie." The shy mare sobbed into her hooves. "Pinkie a princess?" Twilight shouted a whisper to Princess Celestia. Celestia shut her eyes and nodded. Twilight paced around the carpet, a hoof scratching her head, sometimes pulling hair.

" It doesn't make any sense! Pinkie can't be a princess! She's just..just..just Pinkie!"

"Pinkamena is the princess, not exactly Pinkie. The most important matter on hoof right now is this: Pinkamena has escaped."

"As in, sh..sh..she's out there? -sniff- In Pinkie's body?" Fluttershy with red puffy eyes, asked.

"She's an alicorn right now, not an earth mare. The powers of a corrupted alicorn exceeds even my power. Twilight, I need you to use the elements of harmony to stop her."

Twilight's stammered," T..t...t...then who will take Pinkie's place, as the element of l..l..la..laughter?"

"Go look for a gray pegasus mare with bubbles for a cutie mark, she has a yellow mane. She will be perfect."

"How will I know who she is-"

"You'll know."