Carrie Fisher and Debbie Reynolds both passed away before the documentary aired on American television.
The narrative initially began as a chronicle of Debbie Reynolds' late-in-life career, but turned into a story about Carrie Fisher and Debbie's relationship.
Filming for the documentary began in April 2014 and ceased after Debbie Reynolds was nominated for the SAG Lifetime Achievement Award in January 2015.
According to Alexis Bloom, Carrie Fisher was struck by the intimacy of the scenes when she saw the first cut of the film, but came to endorse it after a conversation with the directors.