Carolyn Lee Hennesy (born June 10, 1962) is an American soap opera actress, author, and animal advocate. She is known for her role as Diane Miller on the daytime television series General Hospital, for which she earned a Daytime Emmy Award nomination. Hennesy's 2011 novel The Secret Life of Damian Spinelli, featuring characters from General Hospital, reached #16 on the New York Times Best Seller list. She is also known for her work promoting AZA zoos and aquariums, and accredited marine parks like SeaWorld.
Hennesy was born on June 10, 1962, in Encino, California. She is the daughter of production designer and art director Dale Hennesy, who won an Academy Award for Best Art Direction for the 1966 film Fantastic Voyage.
Hennesy starred as Mrs. Valentine on the teen drama Dawson's Creek in the 2000–2001 season, and she had supporting roles in the films Global Effect (2002), Terminator 3: Rise of the Machines (2003), Legally Blonde 2: Red, White and Blonde (2003), Click (2006), The Heat Chamber (2003) and Cougar Club (2007). She made three appearances on That '70s Show and has guest-starred on Reba as the mother of Reba's son-in-law, Van. She made a guest appearance on Drake & Josh as Mrs. Abernathy, the boss of the Ball & Vance Fish Corp. Additionally, she appeared as Judith Haven in an episode of What I Like About You and she voiced Blair Lansfield in the video game Star Ocean: Till the End of Time. Currently, she stars as Rosalyn Harris in the fifth season of HBO hit series True Blood. In 2016, she joined the cast of the Netflix production Gilmore Girls: A Year in the Life.