Diana Rigg through the years English actress Diana Rigg as Emma Peel in the television series 'The Avengers', 14th December 1964. (Photo by Terry Disney/Express/Getty Images) (Terry Disney/Getty Images)
Diana Rigg through the years British actress Diana Rigg wearing a blue tracksuit with green trim, holding a cigarette while seating in the driver's seat of a car during filming of British television series 'The Avengers', circa 1964. (Photo by Keystone/Hulton Archive/Getty Images) (Keystone/Getty Images)
Diana Rigg through the years circa 1965: Stage and TV actress Diana Rigg trying out a car at The Motor Show. (Photo by Fred Mott/Evening Standard/Getty Images) (Fred Mott/Getty Images)
Diana Rigg through the years English actress Diana Rigg tied to the rail of a train filming a scene of television series 'The Avengers', UK, 4th April 1965. (Photo by R. Viner/Daily Express/Hulton Archive/Getty Images) (R. Viner/Getty Images)
Diana Rigg through the years English actress Diana Rigg models a wool trouser suit called 'Blackboard', designed by John Bates for her role in television series 'The Avengers', 11th October 1965. (Photo by Central Press/Hulton Archive/Getty Images) (Central Press/Getty Images)
Diana Rigg through the years Actors Oliver Reed and Diana Rigg pictured embracing as they attend a reception for their film 'Assassination Bureau', at the Hilton Hotel in London, November 8th 1967. (Photo by Central Press/Hulton Archive/Getty Images) (Central Press/Getty Images)
Diana Rigg through the years English actress Diana Rigg models an ice-blue lame trouser suit from the upcoming 'The Avengers' episode 'Castle De'Ath', 29th September 1965. Jean Varon sells the outfit for 29 guineas. (Photo by Keystone/Hulton Archive/Getty Images) (Keystone/Getty Images)
Diana Rigg through the years Welsh actor Anthony Hopkins as Macbeth and English actress Diana Rigg as Lady Macbeth in a production of Shakespeare's tragedy 'Macbeth'. (Photo by Steve Wood/Getty Images) (Steve Wood/Getty Images)
Diana Rigg through the years Actress Diana Rigg wearing top hat and tails during rehearsals for the play 'Jumpers', at the Old Vic Theatre, London, January 30th 1973. (Photo by Central Press/Hulton Archive/Getty Images) (Central Press/Getty Images)
Diana Rigg through the years Actress Diana Rigg rehearsing a scene for the play 'The Misanthrope' at the Old Vic Theatre, London, February 19th 1973. (Photo by Leonard Burt/Central Press/Getty Images) (Leonard Burt/Getty Images)
Diana Rigg through the years 1981: Lady Holiday, played by Diana Rigg, gives instructions to her secretary, Miss Piggy, in Jim Henson's 'The Great Muppet Caper'. (Photo by Hulton Archive/Getty Images) (Hulton Archive/Getty Images)
Diana Rigg through the years APRIL 2002 - Dame Diana Rigg during the press conference at the Hyatt hotel. She will play in The Hollow Crown at the Sydney Theater Royal.Legends of British Theater on Royal Shakespeare- company tour of Australia & New-Zealand. (Photo by Patrick Riviere/Getty Images) (Patrick Riviere/Getty Images)
Diana Rigg through the years LONDON - FEBRUARY 13: Dame Diana Rigg and Martin Jarvis perform during the photocall for the new stage production of Honour at Wyndham's Theatre on February 13, 2006 in London, England. (Photo by Chris Jackson/Getty Images) (Chris Jackson/Getty Images)
Diana Rigg through the years Diana Rigg appears in "Game of Thrones" season 7, episode 3 which debuted on July 30, 2017. (Helen Sloan/courtesy of HBO)
Diana Rigg through the years NEW YORK, NY - JUNE 10: Diana Rigg attends the 72nd Annual Tony Awards at Radio City Music Hall on June 10, 2018 in New York City. (Photo by Jamie McCarthy/Getty Images) (Jamie McCarthy/Getty Images)
Diana Rigg through the years CANNES, FRANCE - APRIL 05: Dame Diana Rigg accepts the Variety Icon Award at the 2nd Cannesseries - International Series Festival : Opening Ceremony In Cannes on April 05, 2019 in Cannes, France. (Photo by Pascal Le Segretain/Getty Images) (Pascal Le Segretain/Getty Images)