Cheryl Ladd was a prominent actress in the late 70s and early 80s, known for her role as Kris Munroe in the TV series "Charlie's Angels". However, there is no record of a 1979 special dedicated to her.
It is possible that you are thinking of a different special, or the details are slightly incorrect. Could you please double-check the title and year?
If you can provide more details, I can help you find the cast and crew information for the correct special.