The Oscars have ended in chaos, with the wrong film announced for the night's biggest award - Best Picture.

Warren Beatty looked confused with the envelope and paused, before letting Faye Dunaway mistakenly announce La La Land had won.

Moonlight was actually the winner - something which wasn't rectified until the cast and crew of La La Land were onstage.

Moonlight Director Barry Jenkins said it was definitely a surprise.

"I was speechless when the result was altered because I've watched the academy awards [and] I've never seen that happen before."

La La Land actress Emma Stone said she's happy for the Moonlight cast and can see the funny side.

"Is that the craziest Oscar moment of all time?"