because she is a queen and she came first in a eqestria.
Because she rules along side with her sister, Luna.
Yes, she is Princess Celestia's adopted niece.
Princess Luna became jealous of Princess Celestia and tried to take full control of Equestria and bring everlasting night. Celestia was forced to banish her to prevent this.
So far there has been no mention of the parents or any the mention of the origin of Celestia and Luna.
No. From the first episode: "...the eldest used her unicorn powers to raise the sun at dawn; the younger brought out the moon to begin the night."; this indicates that Luna, the one who controls the moon, is the younger of the two princesses.
Her student is Twilight Sparkle who finished all her challenges about friendship, and now is an Alicorn just like princess celestia.
Yes, she is Princess Celestia's adopted niece.
Princess Celestia
So far there has been no mention of how Luna and Celestia came to be.
Princess Luna became jealous of Princess Celestia and tried to take full control of Equestria and bring everlasting night. Celestia was forced to banish her to prevent this.
Yes she is.
So far there has been no mention of the parents or any the mention of the origin of Celestia and Luna.
Like her sister Princess Luna, Princess Celestia is what the fans call an alicorn. Offically the princesses are all three races at once, equally an earth pony, pegasus, and a unicorn.
No. From the first episode: "...the eldest used her unicorn powers to raise the sun at dawn; the younger brought out the moon to begin the night."; this indicates that Luna, the one who controls the moon, is the younger of the two princesses.
It has not been mentioned anywhere how the princesses came to be.
No. Only four princesses have been named in the show: Celestia, Luna, Cadance, and Twilight. Princess Papillon appears to have been an alternate version of Queen Crysalis created by the show's fans.
Her student is Twilight Sparkle who finished all her challenges about friendship, and now is an Alicorn just like princess celestia.
Not that we know of. Luna is her only known sibling.