After visiting the past, Twilight spends some quality time with Princess Celestia before returning to Ponyville. She then falls into a coma and wakes up where no living pony would ever wish to be, and things only get more complicated when Celestia gets an unexpected visit from herself.

Source

Twilight Sparkle struggles to find a meaningful gift for Princess Celestia.

After a brief spat with Spike over a seemingly trivial matter Twilight decides that in order to learn more about dragons she should try to become one. With a simple spell she transforms her little pony self into a larger dragon and quickly realizes that she has no way to change back available to her....

After Hearts and Hooves Day, Twilight goes to Canterlot to make a confession to her one special pony. However, when she does, Twilight discovers that Princess Celestia has long been under the effects of a love curse.

Can Twilight Sparkle break the curse and save Princess Celestia's heart, or will she accidentally burn down Canterlot in the process?

A Twilestia story.

The Elements of Harmony aren’t always the only thing standing between Equestria and the darkness. They are simply the preferred option. Princess Luna learns this one day, when she finally summons the courage to ask her sister a question that had been bothering her for months. "But what if Twilight had failed?"

She is shocked that Celestia actually has a Nuclear option - but not nearly as horrified as Twilight and her friends are when they are tricked into triggering it...

Twilight Sparkle and Princess Celestia meet to have tea in Canterlot Castle on the eve of Hearts and Hooves Day. Twilight has something very important to ask her teacher, but will she be able to work up the nerve?

This is written for the MLP WTG group under the topic of "hearts and hooves day". Please comment, if you would, to tell me what I did right and what I screwed up.

This is a fan work. MLP FIM and all the characters therein belong to Hasbro, so don't sue me please.

Twilight Sparkle has been betrayed by Celestia, all her friends brutally killed in front of her eyes after the young unicorn woke up one morning with wings. Celestia had realized that Twilight had been chosen by the Elements of Harmony to replace Luna and herself as the leading force of Equestria, and correctly surmised that the other Elements would have followed shortly after and become a united force the current princesses couldn’t hope to defeat if they chose to contest their position for the throne. Even though Twilight doesn't want to acknowledge her destiny as Equestria's next chosen ruler, the new alicorn cannot let the tyrants she has now seen Celestia and Luna really are remain in power.

Armed with only the Elements of Harmony and her burning rage, Twilight sets out to avenge her friends and free Equestria from Celestia and Luna's tyranny.

The fate of Equestria, as well as the balance of this entire universe, hinges on Twilight's success.

Princess Luna has returned! After many months recuperating from her banishment and reclaiming her divine ability, the younger sister is once again raising the moon and taking on her duties as Celestia's equal. Everything is as it should be... except for one problem Celestia never anticipated. With her workload effectively halved and a good night's sleep a millennium-old memory, the elder princess must face her greatest challenge yet: boredom.

Source

Twilight gets a distressing letter from Celestia and rushes to Canterlot.

What happened to the princess? What is Luna up to? Why do I sound like the narrator to a bad crime drama?

The first chapter is inspired by a drawing from JohnJoseco. The rest will be my own madness doing its part.

When a mishap occurs with Celestia's bathroom scale, an ancient protocol that may just doom Equestria is set into motion.  With the entire palace staff now conspiring against her, the sun goddess must not only contend mountains of paper work, dancing celery sticks, and steroid pumped stallions, but a sister who will take this chance to torture Celestia any way she can as payback for her banishment. Lock the cupboards and barricade the fridge! It's the Royal Diet!

Now with TVTropes page! :http://tvtropes.org/pmwiki/pmwiki.php/Fanfic/ASliceOfLife