Favorite Anime/Manga superhero costume

[Reavyn]

What is your favorite superhero costume found in anime and manga?

Superhero being those that change close to be able to fight the evil doers. Much like Sailor Moon or Bubblegum Crisis.

I'm going to have to think on this more to come up with mine, cause I just totally drew a blank when making this post...

[Avi]

Akumetsu's mask, simple yet devious.

[magicalgirlj]

the Shinsengumi outfit from Gintama and the Varia coat from Reborn