Finding fame at 13 left Sophie Turner "mentally unwell". Now, as she graduates from Game of Thrones, the actress talks to Josh Glancy about marrying pop star Joe Jonas and her role in the new X-Men film.

It takes all of three seconds for Sophie Turner to win me over. She is standing in the lobby of the Mandarin Oriental in Manhattan. I sidle up to her awkwardly and for a moment she looks troubled, another autograph hunter, before I eventually mumble an introduction.

Then she smiles and slaps me chummily on the shoulder. "Come on then, let's do this."