Image imported from derpibooru 
Original Description:
 
This is my updated version of “Summer Star”. I have renamed her as “Solarlith” instead and gave her some armor. As you can see, I changed the armor a little bit into drawing (bottom left corner).
 
In my little story I’m making about this character, Solarlith is the name of the magic comet that travels around whatever galaxy Equestria is in. Solarlith’s cutiemark represents the comet. I also gotta say, any name pertaining to stars, space, magic, or the sun has been taken. I looked. So I had to think of something really out there for this unicorn.