She played Olenna Tyrell in the iconic series.
Game of Thrones star Diana Rigg has died at the age of 82, it has been confirmed.
The iconic actress is known for her roles in Game of Thrones, TV series The Avengers and James Bond film On Her Majesty's Secret Service.
Her agent shared the news in a statement released on Thursday, saying: "She died peacefully early this morning.
"She was at home with her family who have asked for privacy at this difficult time."
Diana played the hugely popular character Olenna Tyrell in Game of Thrones from 2013 until 2017.