This week saw the passing of two Hollywood icons - Carrie Fisher and her mother Debbie Reynolds - within a day of each other.

Over the course of their lives, the mother-daughter duo endured tempestuous times but remained the best of friends until their passing. The fact they were so willing to talk openly about their struggles on Oprah Winfrey's chat show in 2011 was proof of how endlessly resilient and professional these two extraordinary individuals were.

Fisher wasn't just an actor: she wrote several novels also, one being Postcards from the Edge - a fictionalised account of how it was to be brought up by a Hollywood movie star parent (a film adaptation starring Meryl Streep and Shirley MacLaine followed in 1990).

The sobering and often hilarious interview - conducted to coincide with the HBO documentary of Fisher's Wishful Drinking - lasts for over 40 minutes and sees the duo perform a touching medley. Among other things, the duo talk about Reynolds' ill-fated relationship with Fisher's father, crooning sensation Eddie, and the Princess Leia actor's mental health problems.

Reynolds shot to fame after starring in classic 1952 musical Singin' in the Rain opposite Gene Kelly.

Debbie Reynolds and Carrie Fisher Show all 9 1 /9 Debbie Reynolds and Carrie Fisher Debbie Reynolds and Carrie Fisher American actor and singer Debbie Reynolds smiles and holds her infant daughter, Carrie Fisher Getty Debbie Reynolds and Carrie Fisher American actress Debbie Reynolds with her daughter Carrie Fisher Getty Debbie Reynolds and Carrie Fisher Actress Debbie Reynolds, poses with her children Carrie Fisher and Todd Fisher Getty Debbie Reynolds and Carrie Fisher Debbie Reynolds and Carrie Fisher arrive at the premiere of 'Star Wars Episode III: Revenge of the Sith' Getty Debbie Reynolds and Carrie Fisher Actress Carrie Fisher and her mother, actress Debbie Reynolds Getty Debbie Reynolds and Carrie Fisher Actress Debbie Reynolds accepts the Life Achievement Award from her daughter, actress Carrie Fisher onstage at the 21st Annual Screen Actors Guild Awards at The Shrine Auditorium in Los Angeles, California. Getty Debbie Reynolds and Carrie Fisher Actresses Carrie Fisher, Screen Actors Guild Life Achievement Award recipient Debbie Reynolds, and Billie Lourd pose in the press room during the 21st Annual Screen Actors Guild Awards at The Shrine Auditorium in Los Angeles, California Getty Debbie Reynolds and Carrie Fisher A candle is seen on the star for Debbie Reynolds on the Hollywood Walk of Fame in Hollywood, California Getty Debbie Reynolds and Carrie Fisher A view of a temporary star made by fans in tribute to actress Carrie Fisher on Hollywood Walk of Fame in Hollywood, California Getty

"There have been a few times where I thought I was going to lose Carrie," Reynolds can be seen saying. "I've had to walk through a lot of my tears but Carrie's worth it.

"My lowest point in Carrie's and my relationship was when we discovered that she was ill, or that she had this mental health problem and that it was going to be with her forever. That was very hard. How was she going to get along in life? How can I help her life? All I can do is love her and always shall."

You can watch the full interview below.