SunsetSparkle

SunsetSparkle is the femslash ship between Sunset Shimmer and Twilight Sparkle from the My Little Pony fandom.

Equestria Girls
The newly crowned Princess Twilight arrived at the castle in the Crystal Empire for a princess summit. She is uncomfortable with her new states and her new wings. She tries to sleep and eventually succeeds. But, a mysterious mare steals her crown and runs off into a mirror. Princess Celestia reveals that it was her former student, Sunset Shimmer. She tasks Twilight to go into the mirror world to get back her crown (since it's also the most powerful Element of Harmony). Twilight and Spike goes to the mirror world. There, they realizes that they have been turn into a human and a dog respectively. Twilight ends up meeting Sunset after wandering into the Canterlot High School. The latter was bullying a human counterpart of Fluttershy. Twilight interrupts her and Sunset doesn't recognizes the princess. She talks down to her, saying that since she's new she shouldn't confront her.

Rainbow Rocks
The next time the two met they became friends, as Twilight helps Sunset fight a threat from their pony world.

Friendship Games
The event of the Friendship Games has Sunset meeting Twilight's human counterpart, who is from her rival school. Sunset knows that this second Twilight, who is nicknamed Sci-Twi, is different from the first Twilight she befriended and this why she acted curly towards her. After the magic Sci-Twi stole from Sunset and her friends consumes her and transform Sci-Twi into Midnight Sparkle, Sunset remembers when she went through something similar and how the power of friendship is what allowed Princess Twilight to stop her, and later offered Sunset her friendship. Since it was Princess Twilight's kindness that got Sunset to change for the better, she decides to take a page from Twilight's book by offering Sci-Twi her friendship.

Moments
Mirror Magic
 * Due to the events that transpired after Sunset and her friends got their new powers, her mind beings to be filled with questions and uses the magical message journal to ask Twilight how she is able to drop everything whenever trouble appears.
 * Before Twilight left on another friendship mission, she noticed that the journal on Sunset's end is full and asks Starlight Glimmer to give Sunset a new one.
 * Just before Starlight Glimmer is about to head back to her home world, Sunset gets a message from Twilight that has her calling Sunset and her friends good teachers. Along with allowing Sunset to spend more time with Starlight and hopes tat they'll enjoy the premier.

Fanon
This shipping started mostly after Sunset's redemption. But because Princess Twilight started to stop appearing in the EG universe, fans quickly moved over to SciTwiShimmer, as Sunset becomes friends with Twilight's human counterpart while staying in contact with Princess Twilight through a magical message journal. Because some SciTwiShimmer fans call the said ship "SunsetSparkle" as well, it sometimes causes fans to confuse the two ships for one another, along with the fact that Sunset is close with both pony and human Twilight.

On AO3, the ship has 84 fanfics, while FanFiction.net has 49 out of 503 in its My Little Pony (cartoon) category.

Fandom
FAN FICTION
 * Sunset/Twilight on FanFiction.Net
 * Sunset/Twilight on FanFiction.Net

TUMBLR

Trivia

 * Sunset's name is meant to evocate the same vibes as Twilight's name (Starlight's name is also based on that principle).
 * Following the above, both names are different times of the day.
 * Rebecca Shoichet voiced both characters (although she's only Twilight's singing voice).

Variations

 * SciTwiShimmer refers to the ship between human Twilight (Sci-Twi) Sparkle and Sunset Shimmer