Pricess Celestia

Princess Celestia is the "Princess of the Day" and primary ruler of Equestria alongside her younger sister Princess Luna. Princess Celestia is an alicorn who controls the rising and setting of the Sun. For a millennium, she also controlled the moon while her sister was banished. She has a white coat with a hint of pink and a pink, violet, green and cyan eternal mane and tail and purple-pink eyes. She wears a gold tiara, collar and horse shoes. She has different wings compared to the other three princesses and she possesses the longest horn. Her cutie mark is a large sun symbol. Princess Celestia is usually very kind, patient, and understanding. She wishes for her subjects to relax and be themselves around her, despite her status. She is also sometimes somewhat mischievous. She has a pet phoenix named Philomena, appearing in "A Bird in the Hoof". Celestia is taller than all other ponies in the show.Celestia often refers to Twilight Sparkle as her "most faithful student".

In the alternate world shown in My Little Pony: Equestria Girls, she is known as Principal Celestia, and is the head of Canterlot High.