Kathryn Hahn plays Carla, a single mother, in the film and raises two children with her husband Ethan Sandler off-screen. Hahn
spoke of the spin off in February, "When we got the germ of an idea that it would be Christmas-themed, we thought it was perfect," Hahn told AOL. "I would've been thrilled to play with those ladies anywhere, but knowing that this is what it's going to be [is amazing]."