If you have Netflix or Amazon Prime it’s always worth keeping an eye out for whatever fashion documentaries they have up at the time. There is also quite a substantial amount of interviews and older documentaries on Youtube.
Paris is Burning
Notebook on cities and clothes
The September Issue
Diana Vreeland: The eye has to travel
Dior and I
You can also watch interviews and documentaries on Youtube, of particular note are the interviews done by “The New School”, this is a famous university in New York of which Parsons is a part of. However by far and away the best source of interviews is Show Studio, there are a lot of influential people interviewed who might not be known to those who work outside of fashion but who make seriously big contributions to the fashion ecosystem.