Watch: Kristen Stewart & Mackenzie Davis Test Their Movie Couple Knowledge

"Know Your Role" is a card game for only the most dedicated actors. We asked Kristen Stewart and Mackenzie Davis of 'Happiest Season' to go head-to-head in this classic game to see who knows more about famous cinematic love stories. Watch the hilarious video below, plus discover the best holiday movies and shows to stream this winter.

Watch: Kristen Stewart & Mackenzie Davis Test Their Movie Couple Knowledge