(written from a Production point of view)
Robert Fletcher Wycoff (born 23 August 1922; age 92), better known simply as Robert Fletcher, designed the costumes used in the first four Star Trek films. He earned Saturn Award nominations from the Academy of Science Fiction, Fantasy & Horror Films for his work on all four films, winning his fourth (for Star Trek IV: The Voyage Home). Starfleet uniforms based on his designs were also used in Star Trek V: The Final Frontier, Star Trek VI: The Undiscovered Country, and Star Trek Generations as well as in scenes for Star Trek: The Next Generation and Star Trek: Voyager.
Fletcher was also responsible for the "look" given to the Klingons and Vulcans in the Star Trek films, elements of which have been used in every subsequent Star Trek series, including the Klingon cranial ridges that were first adopted in Star Trek: The Motion Picture. In addition, Fletcher designed the full set of rank pins used in Star Trek II and beyond. Paramount obtained several design patents based on Fletcher's work, where he is listed as the "inventor" of the design.
In addition to his Star Trek work, Fletcher designed costumes for the films Caveman (1981), The Last Starfighter (1984), and Fright Night (1985). He also worked on the epic mini-series North and South, Book II (starring Kirstie Alley, Mary Crosby, Jonathan Frakes, Jim Metzler, Jean Simmons, Kurtwood Smith, David Ogden Stiers, and Anthony Zerbe), for which he earned an Emmy Award nomination for Outstanding Costume Design for a Miniseries or a Special. The Costume Designers Guild honored Fletcher with a Career Achievement Award in 2005.
In 2007, Fletcher also worked as costume designer for the Starfleet uniforms for the fan-made internet series Star Trek: New Voyages episode "World Enough and Time", which features James Cawley, Jeffery Quinn, George Takei, Grace Lee Whitney, Majel Barrett Roddenberry, and John Carrigan.