She has played a lot of different roles over the years from acting in classic TV and films, to working behind the scenes as a writer and producer. Deborah Rennard first captured viewers’ attention by playing Sylvia “Sly” Lovegren in the hit TV show Dallasfrom 1981 to 1991, and she later appeared in films like Lionheartand Land of Doom. In the late 1990s, she shifted into producing, helping bring shows like EZ Streetsand the film In the Valley of Elahto the screen. More recently, she returned to acting with appearances in FBI: Most Wantedand Law & Orderin 2022, and she played a mother figure in the 2023 horror-comedy Appendage.
Deborah Rennard was born on November 4, 1959, in Los Angeles County, California. Her full birth name is Deborah Kathryn Rennard. She grew up in the city where the film and television world is all around, which likely helped spark her interest in acting.
Deborah Rennard built a diverse career in television, film, and production that spans several decades. She began acting in 1981 with the role of Sylvia “Sly” Lovegren in the hit television series Dallas, a part she continued to play for more than ten years. Following her success on Dallas, she went on to appear in other television shows, including daytime dramas like Days of Our Livesand Sunset Beach, as well as guest roles in series such as Due South. In addition to her work on television, she made her mark in films, starring as Harmony in the post-apocalyptic movie Land of Doomand playing Cynthia in the action film Lionheart. She also appeared in well-known films such as Kazaamand Gang Related, further showcasing her range as an actress. By the late 1990s, Rennard expanded her work to behind-the-scenes roles, producing the crime drama series EZ Streetsand later contributing to the production of the acclaimed film In the Valley of Elah. After spending a period away from acting, she returned to the screen between 2021 and 2023, taking on roles in television shows like FBI: Most Wantedand Law & Order, and appearing in the 2023 horror-comedy film Appendage.
Deborah Rennard built her career through both film and television work, appearing in many different projects over the years. She is best known for her role as Sylvia “Sly” Lovegren in the long-running television series Dallas, where she appeared in 188 episodes between 1981 and 1991. Along with this central role, she also made guest appearances in a number of shows including Hardcastle and McCormick, Freddy’s Nightmares, Hardball, Silk Stalkings, Days of Our Lives, Side Effects, Due South, Kung Fu: The Legend Continues, Forever Knight, TekWar, Michael Hayes, Sunset Beach, Family Law, Show Me a Hero, FBI: Most Wanted, Law & Order, and East New York. Her film work includes parts in Land of Doom(1986), Lionheart(1990), Kazaam(1996), Dallas: J.R. Returns(1996), and Gang Related(1997). In addition to acting, she was also active as a producer and worked on the 2007 film In the Valley of Elah. More recently, she has returned to the screen with appearances in films such as Deck the Heart(2021), You Can Never Go Home Again(2021), The Families Feud(2021), and Appendage(2023), where she played the role of Stacy. This range of work shows how Deborah Rennard has continued her career from her breakout success in Dallasthrough later roles in both acting and production.
As of 2025, Deborah Rennard’s net worth is estimated to be around $3 million. Her income comes from her past work as an actress, writer, and producer, especially her long-running role in Dallas, as well as other television roles and stage productions.