The final instalment in the popular Twilight film franchise will be split into two movies, distributor Summit Entertainment has announced.
The first half of Breaking Dawn has been scheduled for release in November, but no date has been set for the fifth film.
Robert Pattinson and Kristen Stewart will shoot the two movies back-to-back.
The announcement comes weeks before third film, The Twilight Saga: Eclipse, is released at the end of June.
The studio had previously suggested that Stephenie Meyer's 900-page Breaking Dawn was too complex to be made into one film.
It has been reported that the all-star cast had only agreed to make four movies, so contracts had to be renegotiated before official announcements could be made.
The fourth book focuses on Bella's marriage to vampire Edward, her subsequent pregnancy, and her desire to be transformed into a vampire.
The first two movies have been phenomenally popular.
Last week New Moon won five prizes at the MTV Movie Awards in Los Angeles.