Now I can't tell if Smash is censoring the original artwork or not. I guess it kind of is but since they added it as an outfit in the game before any official reveal, it's a kind of their idea of a work around. Anyways it does actually look good, hope they give Pyra a similar costume as well then.
Not subtle...
They also got the main artist of XC2 to design the "Massive Melee Mythra" (official in-game name) costume for the Smash spirit and game.
スマブラSP仕様のヒカリのコスチュームをデザインいたしました。>RT