Less than a week after Carrie Fisher and her mother Debbie Reynolds died within 24 hours of each other, HBO has released the trailer for Bright Lights, a documentary about their close relationship.

The tear-jerking preview goes inside the home life of the late Star Wars actress and her ageing mother, exploring their busy careers, their health concerns and their tumultuous past.

Fisher and Reynolds, who lived next door to each other in Los Angeles, became incredibly close in their later years, and Fisher says to the camera, “I’m my mother’s best friend”.

The trailer also captures Fisher’s concerns for her 84-year-old mother’s health.

“I have to go and start rehearsals for Star Wars seven…ty-two,” Fisher jokes in the clip.

“I’m concerned because my mother is not feeling well.”

Fisher’s brother Todd features, telling the camera, “My family in particular could overwhelm most people”.

The documentary also appears to touch on Fisher’s battle with manic depression, as Reynolds reveals “nobody knew what was going on with Carrie” when she was younger.

Primarily, however, the documentary captures the bond between the two Hollywood greats, as well as their brilliant sense of humour and tireless work ethic.

“I share everything with my daughter, especially with the cheque,” Reynolds jokes.

Watch the trailer for Bright Lights