“Bright Lights,” a documentary about the relationship between Debbie Reynolds, star of the classic musical “Singin’ in the Rain,” and her daughter, Carrie Fisher, which first screened at the Cannes Film Festival to great reviews, will air on HBO January 7. The Wrap film critic Steve Pond calls it “frank, funny and so revealing it becomes uncomforable”. More on “Bright Lights” from The Wrap here