The images of the dress have apparently been deleted in that thread, but I have managed to find them. The dress was worn by Julie Cobb in The Airmail Man, Mariclaire Costello in The Triangle, and Kathleen Cody in The Ring. I’m pretty sure I saw Patsy Brimmer wearing the same dress. If I find a picture, I’ll post it here too.
I knew I’d find it eventually. Season 5, The Wedding, Patsy Brimmer’s dress. I think it is the same dress worn by these other women.
Interesting. What I immediately noticed from that picture of Patsy from The Wedding: late 1930s dress paired with late 1970s feathered hairstyle.
I never paid attention to the reuse of same clothes. Maybe, I'll look for that in future viewings. Sometimes, I like to focus on whether the characters' clothes, makeup, and hairstyles fit with the time period.