Oscars 2017: Social media reacts to 'Moonlight,' 'La La Land' gaffe

Oops.

The 89th annual Academy Awards went out with a bang – an epic mixup over which film took the Oscar for best picture.

>> 'Moonlight' wins Best Picture after 'La La Land' mistakenly announced

>> Complete list of winners

>> PHOTOS: 2017 Oscars red carpet arrivals

>> PHOTOS: 2017 Oscars show

After Faye Dunaway and Warren Beatty, who were apparently given the wrong winner's card, announced that "La La Land" had won the award, producer Jordan Horowitz made a shocking revelation onstage as the filmmakers were giving their thank-yous: "Moonlight" was the real victor.

Celebrities and fans immediately took to social media to share their reactions.

>> Click here or scroll down to see what they had to say