Update 6pm, 27th December
In a statement released today, Carrie Fisher's daughter, Billie Lourd has confirmed that the actress sadly passed away this morning.
Of her mother, Lourd said, "She was loved by the world and she will be missed profoundly. Our entire family thanks you for your thoughts and prayers."
Our thoughts are with her family and friends. The film world mourns yet another lost legend.
Update 12am, 24th December
Carrie Fisher's brother has told The Associated Press that his sister is out of the emergency room and is currently stable.
UPDATE: Carrie Fisher's brother says actress is in stable condition after suffering medical emergency aboard plane. https://t.co/BPlgOl9RJ6ó The Associated Press (@AP) December 24, 2016
Worrying news this evening that Star Wars star Carrie Fisher has suffered a major heart attack on a flight from London to LA. The actress, scriptwriter and writer was returning home from a tour promoting her new book, The Princess Diarist.
She was taken ill fifteen minutes before the flight arrived in LA and has been removed from the aircraft by an emergency medical team.
A law enforcement official told NBC that her condition was "not good".
Fisher recently reprised her role as Princess Leia in Star Wars: The Force Awakens having appeared in three other films in the series since 1977.
Our hopes are that she'll make a speedy recovery.
Sources: TMZ and BBC News