Game Of Thrones fans are such a fan of their friendship, they've been dubbed 'Mophie'.
And Maisie Williams revealed she's so close to co-star Sophie Turner that she considers her as a 'sister' according to the Daily Mail.
Speaking on Tuesday's episode of This Morning, the 19-year-old actress was full of praise for her friend as she discussed landing such a major role so young.
The starlet plays Arya Stark on Game Of Thrones, whilst Sophie, 20, plays her on-screen sister, Sansa.