This was a request from ice1517 and their AU.

I actually love their AU, especially the new Celestia and Luna! So this was the information they gave me regarding the sisters:

Luna and Celestia are actually part bat pony. Their father was a alicorn and leader of Equestria and their mother the leader of the bat ponies. They married to merge the bat ponies and the rest of Equestria together as one. Luna is also the oldest child by about 2-3 years and is a full bat-alicorn. Celestia, on the other hand, is only half bat-alicorn which means that she only holds the bat features of the eyes, fangs and bloodlust.

Anywho, I'm actually really happy with the way this turned out and I hope you all like it as well!

P.S. I know Celestia's mane is not only pink but I was going off of the idea that she never had to banish her younger (now older) sister to the moon and take over her duties of raising the moon, therefore didn't receive the blue and green hues in her mane and tail. But shit, did I ever have a problem with her mane and tail XD