Happiest Season, the holiday rom-com set to star Kristen Stewart and Mackenzie Davis, has added even more celebrities to its cast!

Today it was announced that in addition to Stewart and Davis, Aubrey Plaza, Alison Brie, Dan Levy, Mary Steenburgen, and Victor Garber would be attached to the project as well, which begins filming this week in Pittsburgh.

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Happiest Season: What do we know so far?

Directed by Clea DuVall, and written by DuVall and Mary Holland, Happiest Season tells the story of "a young woman whose plan to propose to her girlfriend while at her family’s annual holiday party is upended when she discovers her partner hasn’t yet come out to her conservative parents". 

Stewart and Davis will be co-starring as the romantic leads, while Davis' parents will be played by Garber and Steenburgen. Plaza, Brie, and Levy's roles are currently unknown at the moment.

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Happiest Season is produced by TriStar Pictures and Entertainment One, and set to hit movie theatres on November 20th of this year!

Harry and Meghan

Some consider it would be somewhat contradictory

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