The 21-year-old actress, who essays the role of a redhead, Sansa Stark in the HBO show, is originally a blonde.
"I'm constantly dyeing. On 'Game of Thrones', I have to constantly dye my hair red every week," Turner told PopSugar.
The actress also dished about how her character as the introvert elder Stark daughter has changed her looks to underscore her growing persona as the show progressed.
"(Sansa is) a very silent character, you know; you don't really know what she's thinking, or who is having influence over her. And that was one of the ways we showed - that and her costumes - was the only real way that we knew what she was taking in and learning from these people, because she would mirror Cersei's hairstyle or Margaery's hairstyle.
"GOT" season seven premiers in India on July 18.
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