RhaeOfSunshine

The way I see it.... twilight and sunset, hand in hand, will take over the rolls of celestia and luna. Think about it. They were both celestia's "special" student at one point in time, so both obviously have a special quality to them(can be transformed into alicorns?) Celestia's plan was to take in a student/students to morph and train them in her ways. Sunset had her cutie mark before twilight was able to get hers. Making her more powerful/worthy. Hence why she was the first chioce. But things didn't work out and twilight was next in line to prove worth. Like celestia and luna, twilight and sunset are two sides of the same coin. Plus twilight SPARKLE and sunset SHIMMER. I'd say that sparkle and shimmer mean the same thing. There must be some connection being foreshadowed here. Twilight after some time was able to show her worth to celestia, reulting her to magically turn into an alicorn. Now that the 6 ponies have shown sunset freindship, they have converted her.. mwahhaha. Sunset realizes where she needs to be, her new desinty. She can regain celestia's trust, then take her turn being magically transformed into her alicorn form. Seriously.. equestria girls- rainbow rocks explains it all. In the song sunset sings "my past is not today", she literally sings about being a pheonix being reborn. Starting new with celestia and herself. Not only that, but at the end of the song she bursts out into what seems to be an alicorn form. Which you can check for yourself. https://www.youtube.com/watch?v=XqnbYUG6Bn8 That is my theory. Hope you enjoyed my attempting to shove the evidence down your throat.