The star, who plays Sansa Stark in the fantasy series, jokes about perfecting castmate Kit Harington's Jon Snow accent during the Net-A-Porter footage, and doesn't blink when she is asked to prove she can impersonate the slain character.

Donning a thick cape, like the one Harington wears as Snow, she recites the words of Adele's hit as her castmate.

During the webchat, Sophie also reveals she's a huge Justin Bieber fan and lip-syncs her way through her hero's Love Me, while confessing her favourite song of all time is the Cardigans' Love Me.