While surfing Comic Art Community, link is on the right panel of this blog, I found some awesome pics from the DC Retroactive campaign. I am post the ones from the 70's for 2 reasons. One, that is when I was introduced to the wonderful world of DC Comics, and two, their costumes were awesome!
Superman by Eduarodo Barreto
Batman by artist unknown (at the moment)
And of course my personal favorite,
Green Lantern by Mike Grell