The trailer for HBO's Bright Lights has been released and it's a tear jerker.
The documentary looks at the relationship between the late Debbie Reynolds and Carrie Fisher, who passed away within a a day of each other last December.
In the clip, Carrie talks about how Debbie going through the aging process was made more difficult because she was in the spotlight: "Age is horrible for all of us. But she falls from a greater height".
It also touches on Carrie's battle with mental illness.
"Manic depressive is a disease that was not diagnosed then. So nobody kind of knew what was going on with Carrie," said Debbie reflecting on the issue.
The mother-daughter duo were so close, they even lived next door to each other.
"I'm my mum's best friend. For than I ever would want to, I know what my mother feels and wants. There's a lot of it," Carrie said to the camera.
Just one day after her 60-year-old daughter died, Debbie tragically passed away at 84-years-old from a stroke.
"The last thing she said this morning was that she was very, very sad about losing Carrie and that she would like to be with her again," Debbie's son Todd told TMZ.
"I miss her so much, I want to be with Carrie," the 58-year-old said were his late mother’s heartbreaking final words.
"15 minutes later she suffered a severe stroke," he said.
The Singin' in the Rain star was at Todd’s home in Beverly Hills discussing funeral plans for Carrie, when she was rushed to Cedars Sinai Medical Center hospital.
Carrie, who famously played Princess Leia in Star Wars died on December 27 after suffering a massive heart attack while she was on a flight from London to Los Angeles.
Bright Lights: Starring Carrie Fisher and Debbie Reynolds will premiere on Foxtel January 8.