A brief look at fashions on film.
1, The 1940s.
This kind of square neck blouse was popular in the late 40s and continued to be so in the early 50s. The sequinned sari of course has never fallen out of favour though it may no longer be a French chiffon. Though this particular flower/starburst design is often seen in the 40s/early 50s. And Noor Jahan loved her bling:)
2. The 1950s
3. Late 1960s
Stills from Aranyer Din Ratri.