Oscars 2024 Live Blog: Biggest moments from 96th Academy Awards and Oscar after parties

First-time nominee Cillian Murphy has won the Oscar for best performance by an actor in a leading role for his work in "Oppenheimer."

The actor, who portrayed physicist J. Robert Oppenheimer, the father of the atomic bomb, in "Oppenheimer," said he was "overwhelmed" to have won the award.

"I'm a very proud Irishman standing here tonight," he said. "We made a film about the man who created the atomic bomb and, for better or for worse, we're all living in Oppenheimer's world, so I would really like to dedicate this to peacemakers everywhere."

Cillian Murphy won his first-ever Oscar, taking home the trophy for Best Actor for his performance in "Oppenheimer."

Murphy accepted the Oscar from a group of previous best actor winners, including Nicolas Cage, Matthew McConaughey, Brendan Fraser, Ben Kingsley and Forest Whitaker.

This awards season, Murphy has won a Golden Globe, a Screen Actors Guild Award and a BAFTA.

Other nominees in the category included Bradley Cooper for "Maestro," Colman Domingo for "Rustin," Paul Giamatti for "The Holdovers" and Jeffrey Wright for "American Fiction."

This is Murphy's sixth collaboration with Christopher Nolan, but first time taking on a lead role in one of Nolan's films.

Keep up with the full list of winners here.

The Oscars red carpet opened with some stunning looks on Hollywood's biggest night with a clear trend: black is back! Even "Barbie" herself got the memo.

Watch the video below for a look at this major trend on the red carpet.

Oscars red carpet fashion featured stars going bold in black, with Sandra Huller, Eva Longoria and more sporting inky-dark frocks.

The Oscars paid tribute to those in the entertainment industry who died in the past year during the "In Memoriam" segment.

Andrea and Mateo Bocelli present the Oscars 'In Memoriam' tribute, honoring actors who have died in the past year.

Michael Gambon, Chita Rivera, Alan Arkin, Julian Sands, Andre Braugher, Glynis Johns, Paul Reubens and Ryan O'Neal were among the stars who were remembered, as well as Mathew Perry, Richard Lewis, Lee Sun-Kyun and Carl Weathers.

During the segment, Andrea Bocelli sang "Time to Say Goodbye" with his son Matteo Bocelli.

Hayao Miyazaki just won a historic Oscar at the age of 83. At the other end of the spectrum, a few select actors have won an Academy Award before they even reached puberty.

Here are the youngest Oscar nominees and winners in Academy Awards history.