Of course, it's always nice to see Michelle Forbes back in action. And we've been repeatedly told that that the Powers show is not going to be slavishly devoted to anything from the comics.
Some things are similar, but there's no doubt that the costume above isn't the same as the one we already know:
via Comic Vine
However, we heard at New York Comic Con that art of Retro Girl by Powers artist Michael Avon Oeming (and other comic book artists) will be shown during the series, as part of establishing a world where Retro Girl has been active and a part of pop culture for a long time. Maybe we'll catch a glimpse of the other costumes as previous iterations.