Simon Curtis' film is about a fleeting encounter between a film set assistant and Monroe in the summer of 1956. The young assistant, Colin Clark, was working on "The Prince and the Showgirl," which starred Monroe and Laurence Olivier. Monroe had recently married Arthur Miller.
"My Week With Marilyn" is based on Clark's diary of the week. Kenneth Branagh plays Olivier and Dougray Scott plays Miller. Eddie Redmayne stars as the 23-year-old Clark.
The film will premiere Oct. 9 at Alice Tully Hall. It's to be released by the Weinstein Company on Nov. 4.
The 49th New York Film Festival runs Sept. 30 through Oct. 16.