Oh. What. Fun. is an upcoming American Christmas comedy film directed by Michael Showalter, and written by Chandler Baker and Showalter. It stars Michelle Pfeiffer, Felicity Jones, Chloë Grace Moretz, Danielle Brooks, Denis Leary, Dominic Sessa, Havana Rose Liu, Maude Apatow, Devery Jacobs, Jason Schwartzman, Eva Longoria, and Joan Chen. It is scheduled to be released on December 3, 2025.