I just wrote a chapter for a Legion book celebrating the 50th anniversary, my chapter is an essay on Legion costumes and the influences they got from each decade's real wold fashion... so I know where you're coming from.
Can we get a very sex-ay, Cockrum-costumed Phantom Girl? Pretty please?
I'm with you--the old Legion costumes are crazycool. I did a Princess Projectra commission at a convention last year, but had no way to scan it. Worry not, I definitely will do another as soon as my schedule opens up. Dream Girl, too! She was drawn with a nifty Farrah Fawcett haircut back in the day.