The Millie/Tim hybrid is played by Alison Brie, but you can be forgiven if you don’t recognize her at all. In addition to extensive makeup work on set that saw parts of Dave Franco’s visage applied to the actresses, there were also visual effects employed that changed the shape of her face to be more like her co-star’s/husband’s. Shanks explained,

For our August digital cover story, we interview 'Together' stars Alison Brie & Dave Franco about their unmissable new body horror nightmare.

It must be noted that Together, which is directed by Michael Shanks, wrapped up in a matter of 22 days, making it one of the shortest turnaround times. Alison Brie, reflecting on those 22 days, revealed what she took as a lesson from the set of Together: