Sansa Stark middle finger gif
Adam Rifkin stashed this in Vine
Above is from one of Maisie Williams' (Arya) Vines. Unfortunately it looks like she took down the Vine.
There are actually many hilarious and cute Vines of Maisie and Sophie Turner (Sansa) hanging out. Sophie has a few that feature Zunni, the dog who played Lady. Sophie adopted Zunni after filming.
Here's a fun Maisie Williams Vine: https://vine.co/v/b3XZMHmxzxh
And here's a lot of them: http://vinebox.co/u/wiYZbECgA7A
Maisie Williams Twitter: https://twitter.com/Maisie_Williams
Sophie Turner Twitter (unverified): https://twitter.com/Sophiee_Turner