1. Kim Kardashian and Kanye West vs Taylor Swift
The feud reignited in August when Taylor released her comeback single, "Look What You Made Me Do," which included what appeared to be several references to Kanye West.
Then, when the video was released, Taylor portrayed a character who took selfies and "edited receipts" – references which were widely assumed to be about Kim.
And Taylor then appeared to reference the whole ordeal again with the track "This Is Why We Can't Have Nice Things" on her album Reputation, released in November.
Kim then appeared to respond to the song by sharing this photo from the exhibit Kanye held back in 2016 to celebrate the "Famous" video, which featured a naked waxwork of Taylor Swift lying in bed next to him.
2. Little Mix vs TOWIE's Georgia Kousoulou
The row began after Georgia starred in an online advert for Everything5pounds.com, in which she points to various items of clothing and announces that they are: "Five pounds."
A few weeks after the ads began appearing online, Little Mix appeared to make their own version. They shared this video on their Instagram account, in which Leigh-Anne can be seen pointing to random objects – including butter and a man with a beard – and declaring them "Five pounds," in a fake Essex accent.
Georgia saw the video and in a series of now-deleted tweets, revealed that she was "shocked and upset" by Leigh-Anne's actions.
I'm shocked and upset to see you have used your social media to make a video mocking the advert I did. I'm honestly shocked to see this. I have always been a fan of Little Mix and part of that is because you always talk about "empowering women," not mocking them and bringing them down.
When Little Mix fans stepped in to defend Leigh-Anne, Georgia responded telling them that the video wasn't "girl power."
She said: "I’m not going to say anymore guys but you should never do something “funny" on someone else’s behalf. Girl power is what they believe in. This AINT girl power."
Little Mix never responded. However, reports emerged just a week later that Leigh-Anne and Georgia had seen each other at an event and reacted "frostily" towards one another, remaining at "opposite ends of the bar."
3. Kim Cattrall vs the Sex and the City cast
Things began when Sarah Jessica Parker announced that the third film had been scrapped just days before shooting was due to begin.
Speaking to Extra, she said:
It's over. We're not doing it. I'm disappointed. We had this beautiful, funny, heartbreaking, joyful, very relatable script and story. It's not just disappointing that we don't get to tell the story and have that experience, but more so for the audience that has been so vocal in wanting another movie.
Within hours of the news breaking, reports alleged that Kim Cattrall's "diva demands" were the reason for the project being shut down.
She immediately took to Twitter to deny the allegations.
But then her SATC co-star Willie Garson weighed in. He retweeted the original article...
And suggested it was accurate.
He then sassed a Twitter user who suggested that Kim had "earned" the right to make any demands she desired.
Meanwhile, Kim was retweeting people branding the second SATC movie "terrible."
And Kristin Davis, who plays Charlotte in the show, took to Instagram to express her frustration that the film would never materialise.
And if all of that wasn't enough, Kim then gave an interview in which she described her former co-stars as "toxic," and said she was glad to have "moved on" from the franchise.
Speaking to Piers Morgan, Kim said:
The common ground that we had was the series and the series is over. I've moved on. It feels like a toxic relationship. This is what my sixties are about, they're about me making decisions for me, not my career.
So that's the end of SATC, then.
4. Meryl Streep vs Donald Trump
Just a couple of weeks before Donald Trump's inauguration, Meryl Streep gave an impassioned speech at the Golden Globes in which she denounced his presidency.
During a portion of the speech she declared Trump a bully after referencing an incident in which he appeared to mock a disabled reporter.
This instinct to humiliate when it's modeled by someone in the public platform, by someone powerful, it filters down into everybody's life because it kind of gives permission for other people to do the same thing. Disrespect invites disrespect. Violence incites violence. And when the powerful use their position to bully others, we all lose.
And of course, Trump responded on Twitter, labelling Meryl "overrated" and a "Hillary flunky."
5. Caitlyn Jenner vs the Kardashians
In the book, Caitlyn claimed that Kris Jenner hoarded money, caused the breakdown of her relationships with her four children from previous marriages, and had "known" about her desire to transition for years.
The Kardashians disagreed, and gave their side of the story on Keeping Up With The Kardashians.
But when Kim discovered that passages about the Kardashians had been omitted from the preview copy of the book she'd been given, the whole family declared they were "done" with Caitlyn.
6. Ewan McGregor vs Piers Morgan
Way back in January, Piers Morgan branded the historic Women's March "anti-democratic," and said that he would be holding his own Men's March in response.
Ewan McGregor was due to appear on Good Morning Britain to promote Trainspotting 2, but pulled out of the show last minute after hearing what Piers had said about the march.
Piers responded with a flurry of tweets in which he questioned why Ewan wasn't "big enough" to challenge opposing political opinions.
He then went on to state that Ewan was "just an actor" after all.
And then reminded us that he wasn't the "Dalai bloody Lama" either.
And, in case we hadn't got the message, he also called Ewan a "coward" for good measure.
He then wrote an entire column on the subject, with this headline.
And when Ewan didn't respond, Piers tweeted this sick burn.
7. Drake Bell vs Josh Peck
Shit hit the fan when Drake discovered via Instagram that Josh had got married, and he hadn't been invited to the wedding.
A week later, Miranda Cosgrove – who played Drake and Josh's sister on the show – was asked whose side she was on.
A week after that, Drake spoke about the whole ordeal, revealing that he'd been "caught off guard" and was "shocked" by Josh's marriage news.
Speaking to People, Drake said:
I was caught off guard. I hadn't heard of anything about it. He's been my best friend for 18 years. In all honesty, we talk all the time. We've been talking. I was just expecting...That was a shock. I didn't think it would be that big of a deal. I did not realise that it was going to have such a viral effect. That's my bro, you know?
And a month later, Drake said that he and Josh had spoken privately and smoothed things over.
8. Blac Chyna vs the Kardashians
In October Chyna filed a lawsuit against the entire Kardashian family, blaming them for the demise of her reality show, Rob and Chyna.
While the Kardashians still haven't responded publicly to the allegations, Kim was recently asked what she thinks of Chyna. She refused to answer out of respect for Rob and Chyna's daughter, Dream.
However, judging by this recent teaser trailer, the latter half of season 14 of Keeping Up With The Kardashians due to air in January will address the situation. So hold tight for more drama.
9. Camila Cabello vs Fifth Harmony
First off, Camila revealed she much preferred her solo material, and that being in the band "wasn't the maximum expression of me individually."
She also implied that the acrimony between her and the band after she left wasn't caused by her.
She told Billboard:
I think that in a group there is always going to be tension, whether it's because of this thing or [another] thing. Obviously, I think that rocked the boat. I hoped that it would be a peaceful turning of the page and we would root for each other. But I only got love for them.