Lacey Chabert and Andrew Walker are teaming up for their first joint Hallmark holiday movie seven years after they played love interests in My Secret Valentine. Hallmark Channel revealed during a Saturday, July 19, "Christmas in July" sneak peek that Chabert, 42, and Walker, 46, will costar in the upcoming "Countdown to Christmas" movie She's Making a List, which will premiere later this year. The network teased that "this holiday season, Santa has a new helper," before turning the cameras on Chabert and Walker together on set for the new project.