ANY COMMENTS SAYING SHE WAS BORN AN ALICORN WILL BE FLAGGED AS SPAM.
*tosses headcanon around*Filly-
Celestia, known as Sun Petal when she was younger, was just a normal unicorn.Teen Mare-
Discord's reign starts at this age, and Celestia is just another victim of Discord's schemes.Teen Mare; Rising to Power-
Sun Petal and her sister Moondust discover the Element of Harmony, and imprison Discord in stone. Sun also finds out she is also a very powerful magic-user.Mare; Alicorn Transformation-
Sun and her sister became alicorn goddesses (and soon after, the Princesses of Equestria) once they discovered their true purpose, much like Twilight.Mare; Pre-Godhood-
Now being known as Celestia, this new princess is still learning the ways of Equestria.Mare; Godhood-
Now a fully grown goddess, Celestia and Luna rule in harmony for thousands of years.
Bases (c) *SelenaEde