Ingrid Bergman [Photo: sina.com]

Swedish actress Alicia Vikander is to be the "voice" of Ingrid Bergman in a new documentary about the life of Bergman.

The film "Ingrid Bergman - In her Own Words" is directed by Stig Bj?rkman.

It's being released to commemorate the 100th anniversary of Bergman's birth this year.

Bergman is ranked as the fourth greatest female star of American cinema of all time by the American Film Institute.

She's remembered mostly for her roles in "Casablanca" and a series of roles in Alfred Hitchcock's thrillers.

The Ingrid Berman documentary will premier at this year's Cannes Film Festival in mid-May.