The "older" pic Luna by Madmax, a 1st draft of sorts. One without background, and a different (her current) sword.
Pony Fact: The cape is detachable and is rarely seen in what Luna thinks will be a long fight.
Pony Fact: The uniform most is to protect her during a new moon. This when she is not (mostly) invulnerable. It is also, resistant (Full-Moon)/partly-protective (can take a few hits during a New Moon) against "God-Blades", which is about the only thing that can hurt or kill a God/Goddess.
Pony Fact: Luna can do a Quadruple-Sonic Rainboom.