The Star Wars
actress died on Dec. 27 after going into cardiac arrest on a flight from London to Los Angeles on Dec. 22. One day after Fisher passed, her mother, Debbie Reynolds, died of a stroke. ET also obtained Reynolds' death certificate, which confirmed that the Singin' in the Rain
star died of an intracerebral hemorrhage and hypertension after suffering from high blood pressure for years.
Both stars were honored in the first-ever Golden Globes In Memoriam tribute