Reviews‘Happiest Season’ review: Star-studded cast comes ‘out’ for the holidaysPosted on November 25, 2020 This is the year TV finally made the Yuletide gay: Along with this sparkly rom-com from Hulu, Hallmark and Lifetime are debuting same-sex holiday flicks. But “Happiest Season” (available to stream starting Nov. 25) boasts the highest-wattage cast by far, with Kristen Stewart and Mackenzie Davis starring as a couple attempting to squeeze back into the closet for the holidays.