The comedian mistakenly crowned Miss Colombia, Ariadna Gutierrez, instead of Miss Philippines, Pia Wurtzbach, who had actually won the pageant.
Everyone from Justin Bieber to Sofia Vergara commented on the awkward television moment.
Bieber quoted his song "Sorry" over a photoshopped pic of Harvey. "It's so sad but this is too funny had to post no disrespect," he wrote.
Vergara, a Colombian actress, called Gutierrez "the queen" even after it was discovered that she did not get the Miss Universe title.
Chrissy Teigen was loving all the weekend headlines. "Real Housewives of Atlanta, Miss Universe, Homeland, The Affair and football. This was a day of Twitter beauty," the supermodel wrote.
Teigen added, "I will say whatever a TelePrompTer wants me to, even if my surroundings and cards say otherwise. Because I am afraid, of robots."
I will say whatever a TelePrompTer wants me to, even if my surroundings and cards say otherwise. Because I am afraid, of robots.— christine teigen (@chrissyteigen) December 21, 2015
Mindy Kaling said Harvey's fumble got her attention. "You couldn't have paid me to care about Miss Universe competition before this," the TV star tweeted. "I love Steve Harvey. And both contestants too, now, actually."
You couldn't have paid me to care about Miss Universe competition before this. I love Steve Harvey. And both contestants too, now, actually— Mindy Kaling (@mindykaling) December 21, 2015
Donald Trump, former owner of the Miss Universe pageant, said this would have never happened on his watch. "Very sad what happened last night at the Miss Universe Pageant," the presidential hopeful tweeted. "I sold it six months ago for a record price. This would never have happened!"
Very sad what happened last night at the Miss Universe Pageant. I sold it 6 months ago for a record price. This would never have happened!— Donald J. Trump (@realDonaldTrump) December 21, 2015
Bette Midler got political when she commented on the flub. "Wrong #MissUniverse crowned last night. For two minutes," she Facebooked. "Remember when that happened with our President in 2000 and we had to keep him 8 years?"
Comedian Billy Eichner couldn't help but make light of the embarassing incident. "THERE IS NO ROOM FOR HUMAN ERROR IN A BEAUTY PAGEANT I SAY LET THE WITCH HUNT BEGIN!" he quipped.
THERE IS NO ROOM FOR HUMAN ERROR IN A BEAUTY PAGEANT I SAY LET THE WITCH HUNT BEGIN!— billy eichner (@billyeichner) December 21, 2015
Perhaps CNN Early Start co-anchor John Berman said it best when he posted: "We are all Miss Universe."
We are all Miss Universe— John Berman (@JohnBerman) December 21, 2015
ET spoke with Miss Philippines after all the confusion, and she admitted that she didn't know what to think when she was crowned.
"I had to ask my [manager] many times like, 'Did I really win? Am I really Miss Universe? Are you going to take the crown from me now?'" she said. "And they [said], 'No, no, you're really the winner.'"
Here's more of the beauty queen's interview: