(written from a Production point of view)
Maggie Schpak and her then-husband/business partner, owners of Studio Art Metal, worked closely with Robert Fletcher and his design team for the first three Star Trek movies to create the intricate clothing. Her favorite job, and what she thinks they did the best on, was the Vulcan robes and jewelry for Star Trek III: The Search for Spock. She was interviewed in the special features for the Star Trek III: The Search for Spock (Special Edition) DVD.
She later began working closely with Robert Blackman, including several Klingon accoutrements.
In allSchpak and Studio Art Metal had contributed to all thirteen films, as well as all four of the original spin-off series. (Star Trek: Costumes, pp. 68-70)