Maisie Williams was 12 years old when she was cast as Arya Stark on "Game of Thrones."
She recently shared a photo from her first day on set in 2010.
Williams, now 20, has aged along with her character on screen.
Warning: Spoilers for "Game of Thrones" season seven below.
"Game of Thrones" star Maisie Williams plays the youngest badass on the series: Arya Stark. Both Williams and Arya began their journeys in Westeros at a young age. Williams was just 12 years old when she...