Matt Sayles / Invision/AP 1 / 4
Matt Sayles / Invision/AP 1 / 4

LOS ANGELES (AP) -- Kathryn Bigelow has won the best-director Academy Award for her Iraq War thriller "The Hurt Locker."

Related: See who walked the Oscars red carpet

Bigelow is the first woman in the 82-year history of the Oscars to earn Hollywood's top prize for filmmakers.

Among those Bigelow beat are ex-husband James Cameron, the best-director winner for 1997's "Titanic" who was nominated this time for his sci-fi spectacle "Avatar." Bigelow and Cameron were married from 1989-91.

Related on MSN: See all the 2010 Academy Awards Winners

The acting prizes went to Sandra Bullock as best actress for "The Blind Side"; Jeff Bridges as best actor for "Crazy Heart"; Mo'Nique as supporting actress for "Precious"; and Christoph Waltz as supporting actor for "Inglourious Basterds."