In the stars, a hundred years' journey away, the alicorns gather, to mourn, to mate, and to give birth to the new. They call to their sisters across the galaxies, and Celestia hears them.

Meanwhile, Dotted Line wants her to review tax rebate applications.

(2nd place out of 113 in the "No Regrets" write-off. Dotted Line is from "Whom the Princesses Would Destroy" by GhostOfHeraclitus. Picture by Earthsong9405 & AquaGalaxy, found by Georg. Reading by Super Trampoline. Russian translation by Doof Ex Machina.)

One day, Twilight Sparkle discovers something amazing about her friend Sunset Shimmer.

She's a magical talking pony!

This requires investigation! Science! Possibly a full-body physical!

Or maybe Twilight will just ask her what's up with that.

Rated Teen for frank discussions about... y'know.

Inspired by Friendship with Benefits is Magic. Not intended as a direct followup as much as my own take on the idea. What is Celestia to do when Twilight Sparkle shares a little too much? And why doesn't Twilight have any idea what she's talking about? And why is Luna smiling so much!?

Followed up by yet another epistolary conversation between Twilight and Celestia about the magic of not knowing what the hay that other pony is talking about. Features a special guest appearance by naughty!Luna.

Further bulletins as events warrant.

Just for fun, Spike and Twilight try to write a Power Ponies fanfiction. Simple and easy fun, right?

Nope.

There are a few things about the fanfiction world Twilight needs to learn if she wants ponies to like her story.

Now with a French translation!

In the days after her ascension, every newspaper in Equestria is talking about how Princess Celestia transformed Twilight Sparkle into an alicorn princess.

There's just one problem – Twilight knows that's not what happened.

Why does Celestia let them believe something that isn't true? After all, it isn't like knowing could hurt anypony, right?

‘A horse walks into a bar...’

One evening a despondent Applejack walked into Ponyville’s tavern. The next morning she was gone without a trace.

In the days following her disappearance the inn’s landlord recounts events in Ponyville as the town searches for its lost friend, struggling to understand why she left, and where she went.

This story is a sequel to How Not To Use Your Royal Prerogative

  In an Equestria where the Sonic Rainboom never happened, Sunset Shimmer is the prized pupil of the Princess of the Sun. As Sunset struggles to make up for her past misdeeds and come to terms with the pony she wants to be, Celestia sends her to find the classic work The Application of Unified Harmony Magic from the Royal Canterlot Archives.
  Right after lunch, some meddling by her friends and meeting somepony with firsthoof experience of the Sunset she used to be.

Featured on Equestria Daily on August 18, 2016!
Appeared in the FimFiction Featured Box!

Cast: Sunset Shimmer, Moon Dancer, Minuette, Twilight Sparkle & Princess Celestia

Stories set in the Wavelengths Timeline in chronological order:

Origins Arc
The Alchemy of Chemistry
Bards of the Badlands
Grading on a Bell Curve
Habits of the Equestrian Phoenix
How Not To Use Your Royal Prerogative

Applications Arc
The Application of Unified Harmony Magics
Princess Celestia: A Brief History
The Cloudsdale Report

Dreamers Arc
Tactics of Snowbound Unicorns
A Study in Chaos Theory
Teahouses of Saddle Arabia
As the Raven Flies

Cover Credits
Cover Design by Amber Spark
Sunset Shimmer Vector by TigerBeetle
Pony SciTwi Vector by Osipush
Canterlot Bookshelves Vector by FavoriteArtMan
Sunset Shimmer Cutie Mark by MillennialDan

Beta Reader Credits
Ebon Quill - Worldbuilding Writer on The Manehattan Project
Quantum State - Technical Director of The Manehattan Project
The Albinocorn - Master of Sunset Shimmer Stories

Strongly Recommended Stories:
The Brightest and the Best by Pineta - The events in this story are considered to be completely canon to this timeline and explain Twilight's entrance exam to Celestia's School for Gifted Unicorns. I cannot recommend this story enough.
MLP Annual 2013 - "The Fall of Sunset Shimmer" - As above, the 8-page short comic in the beginning of the Annual is also considered to be canon, though with some major variations.

Version 3.0 Edit: Extensive grammatical and mechanics changes. Adjustment to timeline of Sunset's second mirror experience.

A thousand years is quite the generation gap, so Princess Luna decides she has to get with the times. However, this isn't quite as easy as she thinks it will be...

One morning, Princess Twilight Sparkle wakes up. She then proceeds to do incredibly amazing things.