Aubrey Plaza might be known for her unique brand ... The first major LGBTQ+ Christmas romcom, Happiest Season sees Abby (Kristen Stewart) plan to propose to her girlfriend Harper (Mackenzie ...

Director Jeff Baena, the husband of actress Aubrey Plaza ... couldn't help but celebrate the milestone. "Whoa!!!!" Plaza's Happiest Season co-star Mary Steenburgen commented.

As well as Stewart and Davis, Happiest Season also boasts the acting talents of Schitt’s Creek star Dan Levy, Mary Steenburgen, Victor Garber, Alison Brie, Aubrey Plaza, and Mary Holland.