Check out Space 1999, and the Vulcan clothes from Star Trek (TOS). Pretty much everything from the, so-called, serious scifi of the time was a streamlined version of clothing that was popular then, like the stewardess uniforms in 2001 (OMG the headpiece, to die laughing) or the uniforms in the lounge scene. Then, of course, there's the post distopia, like Planet of the Apes (1968, not the more recent).