Ronald Moore
Executive producer Ronald Moore participates in the Starz "Outlander" panel at the Television Critics Association (TCA) Winter Press Tour in Pasadena, California, January 9, 2015. Reuters/David McNew

“Outlander” season 4 will be the last for Costume Designer Terry Dresbach, wife of Showrunner Ronald D. Moore. A replacement has already been chosen, but that announcement will be made by the producers at some point in the future.

Dresbach announced on Twitter [see below] that she will no longer work on the show. The costume designer has been a part of the show since the very beginning, and the five years long journey has come to an end.

While the work of costume creation is finished for season 4, and the filming has wrapped, Dresbach should be relatively free. She has promised to continue to stay on Twitter and discuss the costumes of the show until season 5 airs. She may be a little reluctant to speak about the costumes in season 5 because someone else will be at the helm at that time.

Dresbach confirmed that she has worked hard to find a worthy replacement for her, and she is confident that the new person coming in will be able to deliver on the expectations of the passionate fan base.

Moore’s wife is also a big fan of Diana Gabaldon’s book series. She felt that this is a right time for her to quit because she has managed to bring the lead characters Claire (Caitriona Balfe) and Jaime (Sam Heughan) to their new home Fraser’s Ridge in the American Colonies, which is a big shift for the show that has mostly been based in Scotland until now.

With the Fraser’s safely in their new home, and a new person taking over, Dresbach can focus on her health and her family. Meanwhile Moore will continue to be the showrunner.

Dresbach confirmed that Moore is currently going to the editing room everyday in order to check on the progress of the postproduction of “Outlander” season 4.