Princess Celestia has invited Twilight to visit her in Canterlot to attend a royal banquet, and she is excited to see her beloved mentor again! When she arrives she is shown through the castle to see Celestia and notices majestic bouts of beautiful magic, namingly a gorgeous incantation that covers the ceilings of the mystic castle. The enchantment mesmerizes Twilight, and when the Princess of the Sun explains to her that it is her sister, Princess Luna's charm that inhabits the brilliant archways. After a delightful dinner with the princesses, Twilight spends time with Luna and is shown the secrets to the the magic of the Princess of the Night. It is a magical evening that brings the two closer than they would have ever imagined....

Luna has seen the dreams of ponies for centuries now. Happy dreams, sad dreams, dreaming of a secret crush, memories of a lost love, all that one can imagine. They all reflect the pony doing the dreaming, and sometimes she goes in to assist them in their problems.

But when she goes into the dream of Twilight Sparkle one night, the most beautiful sight is waiting for her inside.

Real author of story: Midnight Rose. Posted on here with permission.
Edited by myself, as well as Soothing Stone.

Cover image by 90Sigma.

Twilight Sparkle is called away to tend to Luna when she falls ill. As Luna grows sicker and Twilight more determined to help the younger princess, she begins to uncover dark secrets about the elements, the alicorns, and her own past.

Every month, Octavia plays privately for Princess Luna as she paints the night sky. Each time, Octavia feels that familiar feeling, one she's rarely ever felt before. Now she has decided that it is time to announce these feelings. However, she has a secret, one she has kept for longer than she can remember. But surely the Princess of the Night would be able to understand her own creation, right?

Artwork by Johanpok
Dramatic Reading of All the Stars in the Sky

Ever since she arrived in Canterlot to enact her reign as a princess, Twilight has felt a strange feeling.

The feeling of being watched, it follows her around day after day, driving her crazy. Is the new princess truly sensing a stalker or is her mind playing tricks on her again?

The Wizard's Feast will be the first day Luna has seen her sister in weeks, and they have a lot to talk about.

Edit - I will revise this some time after the contest.

After Nightmare Night, Luna invites Twilight to tea, and they start spending more time together. Princess Celestia teases Luna about it sometimes.

Twilight becomes alicorn of the stars. This is sort of a problem, because Luna kind of already was alicorn of the stars. Oops!

TV Tropes

When Twilight Sparkle returns to Canterlot to celebrate the Grand Jubilee with Princess Celestia, she again meets the prank-loving Princess of the Moon - but what does the mischievous Luna want with her? And what do socks have to do with it all?

Special thanks to Canterlot-expert TwilightFlopple for not only inspiring me with her sexy pic of Luna in socks http://twilightflopple.deviantart.com/art/Luna-s-Socks-227462669 but also for helping me come up with a DJ-PWN3 song, a room opulent enough for Equestria's capital and a Griffon King with a suitably epic name. Thanks!

Luna has been redeemed by the elements of harmony, but is finding that salvation is harder to come by. Ponies avoid her, the memories of Nightmare Moon still fresh in their minds. Additionally, after a thousand years of solitude and silence, she’s having trouble adjusting to life in noisy, crowded, living Equestria.

Change never happens easily, and Luna struggles despite the help of her sister and new friends, failing as much as she succeeds.

Perhaps the Moon, her prison for so very long, is truly where Luna belongs after all.