And while we're fairly sure the whole debacle has something to do with Bloom's ex-wife, Miranda Kerr, many have been taking sides in the fight -- even fellow celebrities.
Here are the people who have something to say about the fiasco:
On "The Colbert Report" Wednesday night, Franco admitted he was Team Bloom.
Meanwhile, Colbert had his own words for the melee.
After posting a photo of Looney Tunes characters Spike the Bulldog and Chester the Terrier and calling them Justin Bieber and his bodyguard, Bieber's longtime enemy deleted the tweets and put up this one.
The "Arrow" actor said it was better that the punch didn't connect.
The "West Wing" actor likened the fight to a boxing match... a very tiny one.
The "Vampire Diaries" actress was obviously Team Bloom too.
"Mrs. Doubtfire" child actor Wilson got a few laughs in, but then got serious.
Guess whose side the "Charmed" actress is on?
The "Late Night" host opened his show with an Orlando joke.
Dax Shepard And Shay Mitchell
The two stars reenacted the fight on "The Soup."
As for Justin, he only had one thing to say, and a picture is worth a thousand words.