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Justin Bieber and Orlando Bloom -

In 2012, Bieber saw Orlando Bloom and Leonardo DiCaprio in a restaurant in Ibiza. He approached them to speak to them, but they ignored him. Bieber was annoyed and apparently said something suggestive about Bloom's then-wife, Miranda Kerr. Bloom threw the first punch and security had to separate them. Twice.

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McGregor and Machine Gun Kelly -

At the 2021 MTV VMAs, UFC champion Conor McGregor clashed with singer Machine Gun Kelly on the red carpet. McGregor approached Kelly for a photo, but Kelly's team declined. Chaos ensued when McGregor allegedly swung his cane at Kelly. Security intervened and restrained McGregor. The UFC fighter's team denied that he had asked for a photo and downplayed the incident. He dismissed Kelly as a "little vanilla boy rapper."

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Nicki Minaj and Cardi B -

In 2018, Cardi B and Nicki Minaj got into a fight at New York Fashion Week. Their long-running beef stemmed from a rap rivalry that turned nasty when Cardi accused Nicki of liking a negative tweet about her. 

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Tory Lanez and August Alsina -

Rapper Tory Lanez allegedly assaulted singer August Alsina in 2022. At the time Alsina posted a photo on Instagram showing his bloody mouth and claimed that Tory assaulted him after a show. According to Alsina, Tory confronted him with "8 oversized security guards" and asked why they hadn't shaken hands. Alsina hadn't shaken his hand for health reasons, but Tory allegedly punched him without further provocation. Alsina insisted it was an assault and not a fight and demanded the security footage be released. Tory denied the allegations and said he was in the studio all night.

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Harry and William -

In his memoir 'Spare,' Prince Harry describes a heated argument with his brother, Prince William, at his London home. The argument revolved around Meghan Markle, whom William allegedly called "rude" and "abrasive." The disagreement quickly escalated and ended in a physical altercation. Harry claims he was knocked to the floor, smashing the dog's bowl and breaking his necklace. Harry says he refused to retaliate and William later apologized. The incident put further strain on their relationship.

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Shia LaBeouf and Tom Hardy -

According to director John Hillcoat, the actors in 'Lawless' (2012) were involved in a physical altercation. "It escalated to the point where they both had to be restrained," he said. The tension between them was reportedly caused by LaBeouf's controversial immersive acting technique. Hardy claimed he was knocked out by LaBeouf in the fight. 

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Will Smith and Chris Rock -

At the 2022 Oscars, actor Will Smith shocked the audience by slapping comedian Chris Rock on stage. Rock had made a joke about Smith's wife Jada Pinkett Smith, who suffers from alopecia. The incident became known as "The Slap Heard Around the World." Smith later apologized, but was banned from the Oscars for a decade, and his apology was not accepted by Rock. 

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T.I. and Andrew Taggart -

In a nightclub, rapper T.I. punched Andrew Taggart of The Chainsmokers after Taggart kissed him on the cheek. Despite the scuffle, they put it behind them and T.I. even invited the duo onto his podcast.

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Steven Seagal and John Leguizamo -

During the filming of ‘Executive Decision’ (1996), actor John Leguizamo clashed with Steven Seagal. Seagal, asserting his authority, claimed that his words were law. When Leguizamo laughed, Seagal allegedly decided to make his point by slamming him against a brick wall with an aikido elbow. Leguizamo later said that he "did not have a good time with Steven Seagal. No one has.”

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George Clooney and David O.Russell -

While filming 'Three Kings' (1999), Clooney witnessed the director yelling at extras. He stepped in, suggesting the director should pick on him instead. O. Russell replied, "Why don’t you just f*****g remember your lines for once?" And a brawl ensued.

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Richard Pryor vs Yaphet Kotto and Harvey Keitel -

Pryor (right) allegedly threw a chair at Yaphet Kotto (left), hit Harvey Keitel (center), and threatened director Paul Schrader with a gun during the filming of 'Blue Collar' in 1978.

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Bill Murray and Chevy Chase -

During the third season of 'Saturday Night Live,' the two former cast members had a physical altercation. Bill Murray reminisced, saying, "It was really a Hollywood fight. Chevy is a big man, I’m not a small guy, and we were separated by my brother Brian [Doyle-Murray], who comes up to my chest."

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LL Cool J and Jamie Foxx -

The two actors played football players in the movie 'Any Given Sunday' (1999). LL Cool J mentioned that he was rough with Foxx in one scene, which led to his co-star punching him in the face.

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Debra Winger and Shirley MacLaine -

The actresses played mother and daughter in the movie 'Terms of Endearment' (1983). The co-stars reportedly got into a fight off-screen, of which Winger said "We were wild, you know? She’s not a wilting violet. She’s tough, too."

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Bill Murray and Lucy Liu -

During the filming of 'Charlie’s Angels' in 2000, Murray reportedly told Lucy Liu that she couldn't act, to which she responded by punching him in the face. Murray later commented on the incident, saying: "Look, I will dismiss you completely if you are unprofessional and working with me… When our relationship is professional, and you’re not getting that done, forget it." Liu claimed that Murray had been cruel and even racist towards her during production. 

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Tyrese Gibson and James Franco -

During the filming of 'Annapolis' in 2006, tensions arose between the actors. Gibson said that James Franco is too much of a method actor. “I respect method actors, but he never snapped out of character. Whenever we’d have to get in the ring for boxing scenes, and even during practice, the dude was full-on hitting me," Gibson said.

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Chris Brown and Drake -

The two were at a club when Brown allegedly turned down a bottle of champagne sent by Drake. In return, Brown sent Drake a note with a disrespectful message about Rihanna. You can imagine the rest.

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John Leguizamo and Bryan Cranston -

While filming The Infiltrator (2016), actors John Leguizamo and Bryan Cranston got caught up in a scene. Their physical performance escalated, and they ended up fighting for real. "I was able to take him. I don’t know why. I got a few extra years of street life," said Leguizamo.

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Kid Rock and Tommy Lee -

In 2007, Pamela Anderson sat on the lap of her ex-husband Tommy Lee at the MTV VMAs. Kid Rock, the actress's husband at the time, saw this and got angry, which led to a scuffle between the two men.

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Paris Hilton and Shanna Moakler -

In 2006, former model Shanna Moakler allegedly punched Paris Hilton in the jaw at a nightclub in Los Angeles. The altercation made headlines and rumors about the cause of their clash did the rounds. 

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Richard Gere and Sylvester Stallone -

There was tension between the two actors during the filming of 'Lords of Flatbush' in 1974. Later, Gere reportedly spilled mustard on Stallone's pants on purpose and was fired from the film shortly afterward.

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Kiefer Sutherland and Jack McCollough -

Sutherland was talking to Brooke Shields in a nightclub when they were approached by the fashion designer. It's unclear how the situation escalated, but the '24' actor headbutted McCollough and broke his nose.

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Rob Lowe and Tom Cruise -

'The Outsiders' (1983) featured these two young Hollywood heartthrobs. Lowe accidentally hit Cruise in the face during a fight scene, to which Cruise reacted. Lowe said "I got one clean shot on Tom [...] the next thing you know he’s ready to kill me,” Lowe said. They had to be pulled apart.

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Shannen Doherty and Jennie Garth -

Although Shannen Doherty and Jennie Garth, the former 'Beverly Hills 90210' co-stars, are now on good terms, there was reportedly a physical altercation between them in the 1990s.

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Charlie Watts and Mick Jagger -

Charlie Watts (1941-2021) hit the Rolling Stones front man because he called him "just my drummer." He didn't appreciate being belittled by Jagger.

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Tom Sizemore and Val Kilmer -

During the filming of 'Red Planet' in 2000, things got tense between the actors and Sizemore hit Kilmer in the chest. They have since become friends and Sizemore jokingly told Kilmer: "I’m never going to another planet with you again!”

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Dennis Hopper and Rip Torn -

Rip Torn was meant to join Dennis Hopper and Peter Fonda in directing 'Easy Rider' (1969). But Torn and Hopper each claimed the other pulled a knife over script changes. To add to the confusion, Fonda said the two actually fought each other once, one with a butter knife, and the other with a fork!

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Corey Feldman and Corey Haim -

In 1987, the two actors first became friends when while starring together in 'The Lost Boys.' Years later they met again in the reality show 'The Two Coreys,' where their relationship took a downturn and they eventually got into a fight

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Vince Neil and Izzy Stradlin -

In the 1990s, there was a well-known conflict between Guns N’ Roses lead singer Axl Rose and Mötley Crüe's Vince Neil. The feud began when Neil punched G'N'R guitarist Izzy Stradlin at the 1989 MTV VMAs, claiming that Stradlin had insulted his wife.

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Bill Cosby and Tom Smothers -

In 1977, Smothers congratulated Cosby on his successful show at a party. However, the comedian interpreted the compliment as sarcasm and punched Smothers in the back of the head.

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Patrick Dempsey and Isaiah Washington -

The actors had a fight on the set of 'Grey’s Anatomy.' During the scuffle, Washington insulted his co-star T.R. Knight with a homophobic slur. Knight ultimately left the show. 

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Rick Ross and Jeezy -

In 2012, the two rappers crossed paths backstage at the BET Hip Hop Awards show and a physical altercation ensued. After the altercation, rumors circulated in the hip-hop community, and fans and media speculated about the cause of the altercation. Some claimed it was a long-standing feud, while others believed it was the result of a heated argument during the awards show.

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Tony Bellew and Michael B. Jordan -

According to reports, Michael B. Jordan was accidentally knocked out by a real punch from the boxer while filming 'Creed' in 2015. 

Sources: (Showbiz Cheat Sheet) (Screen Rant) (The Talko) (NME)

See also: The greatest sibling rivalries of all time

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