by Alison Millington – “Moonlight” took home the award for best picture at the 89th
  Academy Awards on Sunday evening — but not before the award was
  mistakenly given to the cast and crew of “La La Land.” The producers of “La La Land,” which entered the night with 14
  nominations, were already delivering their acceptance speeches
  when those onstage began to realize an error had been made. The accounting firm PricewaterhouseCoopers, which is in charge of
  tallying the votes, is investigating how the error occurred. Only two people at the firm knew the results before they were
  announced.
    So how did a mistake of this magnitude happen?
  
- Instead of the best-picture card, presenters Warren Beatty
 and Faye Dunaway were mistakenly given the card for “actress in a
 leading role,” which named “La La Land” actress Emma Stone as the
 winner.
- Two cards are created for each winner.
 PricewaterhouseCoopers, the firm that counts the votes and
 safeguards the winners, gives one set each to its partners,
 Martha Ruiz and Brian Cullinan.
- One of the two sets that should have been discarded after
 Emma Stone received her best-actress award was instead given to
 Beatty by mistake.
- Beatty hesitated after opening the envelope, which the
 audience took to be part of a joke.
- Dunaway took the paper from him and announced the winner as
 “La La Land.” Beatty later said the card actually read “Emma
 Stone, ‘La La Land.'”
    
      
- The cast and crew celebrated and made their way to the stage.
 Producer Jordan Horowitz kicked off the acceptance speeches with
 emotional thank-yous.
- As the speeches were handed over to other crew members,
 Horowitz looked confused.
- A man wearing a headset approached the crew holding another
 envelope, which was shown to Horowitz and the cast and crew.
- The speeches were interrupted by Horowitz, who said, “There’s
 been a mistake. Moonlight, you won best picture.”
- He showed the real best-picture card, which listed
 “Moonlight” as the winner for the camera to see.
- Beatty, who had also reappeared, confirmed this was the case.
- The shocked “Moonlight” cast began to celebrate, as the
 stunned cast and crew of “La La Land” started to leave the stage.
- Jimmy Kimmel approached the microphone, saying, “This is very
 unfortunate what happened.”
- Before leaving the stage, Horowitz said: “I’m going to be
 really proud to hand this to my friends from ‘Moonlight.'”
- Beatty approached again, to which Kimmel joked, “Warren, what
 did you do?”
- “I want to tell you what happened,” Beatty said. “I opened
 the envelope and it said, ‘Emma Stone, La La Land.’ That’s why I
 took such a long look at Faye and at you. I wasn’t trying to be
 funny.”
- 
He told Deadline that he was
 given the best-picture envelope by a stagehand.
- The audience cheered as the “Moonlight” cast and crew took
 the stage and began their speeches.
    
      
- Afterwards, Kimmel said, “Let’s remember: It’s just an award
 show.”
- While speaking to the press backstage, Stone said: “I also
 was holding my best actress in a leading role card that entire
 time. So whatever the story … I don’t mean to start stuff, but
 whatever story that was, I had that card. So I’m not sure what
 happened.”
- PricewaterhouseCoopers released a statement saying: “We
 sincerely apologize to Moonlight, La La Land, Warren Beatty, Faye
 Dunaway, and Oscar viewers for the error that was made during the
 award announcement for Best Picture.”
- PwC went on: “The presenters had mistakenly been given the
 wrong category envelope and when discovered, was immediately
 corrected. We are currently investigating how this could have
 happened, and deeply regret that this occurred. We appreciate the
 grace with which the nominees, the Academy, ABC, and Jimmy Kimmel
 handled the situation.”
- PwC partners Martha Ruiz and Brian Cullinan are the only two
 people in the world who knew the result before it was announced,
 according to Forbes.
- 
According to the BBC, two
 sets of envelopes are created, one for each of the partners. It
 appears one of the duplicates made its way into the hands of
 Beatty and Dunaway.



