Canon has been very inconsistent about this. There's also a similar issue plushmakers face, or rather their patrons who need to make a choice: is the black cloud on Luna's butt connected in the middle or not? Canon resolves this but preferences still vary.
>>42773030 >shit so forceful it wrapped around her ass >yet she has enough control to shape it into the same exact formation as the marking on her sister
>>42773001 (OP)
I don't know, but I like the idea that the phase of the moon in her cutie mark changes with the phases of the moon. Yeah, it's not canon, but I just like the idea.
>>42773495
They at least don't under their main name and I'm too lazy to try and find an alt so I'm going to say you're wrong. You now owe me 5 monopoly dollars.
>>42773001 (OP)
I like the idea of the black part being leftover from her time as nmm, and it being so impactfull on her during and after the fact that it left an imprint on her cutie mark
>>42773286
WE'RE GONNA GOON SO MUCH :wall: YOU MAY EVEN GET TIRED OF GOONING :wall: AND YOU'LL SAY PLEASE PLEASE :wall: IT'S TOO MUCH GOONING :wall: WE CAN'T TAKE IT ANYMORE :wall: MR PRESIDENT IT'S TOO MUCH :wall: AND I'LL SAY NO IT ISN'T :wall: WE HAVE TO KEEP GOONING
>>42773498
I remember an old fanfic where Luna changes between S1 and S2 designs according to the phases of the Moon. I think it was made to explain her new appearance back in late 2011.