The movie's stars earned Oscar nominations. Michelle Williams is up for best actress for her portrayal of Hollywood icon Marilyn Monroe and Kenneth Branagh is up for best supporting actor for his performance as the British actor Laurence Olivier.
The film studio announced the film will expand Friday ahead of Sunday's Oscar ceremony. It is currently in 120 theaters.
"This will give audiences a chance to see for the first time or revisit the film in theaters in advance of the awards," the studio said in a news release.