Michelle Pfeiffer is a mom letting loose - on national TV - in her new holiday film, Oh. What. Fun. The family comedy, which hits Prime Video on Wednesday, December 3, follows Pheiffer, 67, as Claire Clauster, a mom who feels unappreciated by her family during Christmas and decides to set off on her own, spontaneous adventure. Felicity Jones, Chloë Grace Moretz, Denis Leary, Dominic Sessa, Devery Jacobs, Havana Rose Liu, Jason Schwartzman, Rafaella Karnaby and Drake Shehan also star.