Jenna Wade – Dallas

Morgan Fairchild played Jenna Wade on Dallas for a single episode in 1978, and then she was replaced by Francine Tacker for two episodes in 1980. The character then went off the radar for several years before making a return.

When Jenna popped back up in the show in 1983, she was played by Priscilla Presley, the wife of Elvis. Priscilla was the third and final actress to hold the job all the way through 1988, when Dallas phased Jenna out.