Reposted from Star Trek.com:
StarTrek.com is saddened to report the passing of Arlene Martel, who died on August 12 following a heart attack. The veteran television and film actress had a career that spanned parts of seven decades, dating back to the golden age of television, but she was arguably best known for her role as T'Pring in the "Amok Time" episode of Star Trek: The Original Series.
The character -- Spock's betrothed, whom she spurns -- was a sexy, exotic presence in the episode, the first and only episode set on Vulcan. Martel had previously auditioned for roles in the episodes "Where No Man Has Gone Before" and "Catspaw."
You can read more about Arlene here.