Lady Mary being silly? The Dowager Countess with her elbows on the table? Thomas taking selfies with friends? See Michelle Dockery, Maggie Smith, Robert James Collier, and all the actors and actresses of Downton Abbey behaving completely out of character, cutting loose, hamming it up, palling around, and generally loving their work and their castmates.
Sign up to get the latest news on your favorite shows like Victoria, Sherlock and Poldark, exclusive content, video, sweepstakes and more.