9+ Celebs Who Savagely Called Out Other Celebs Online And Showed No Mercy

Before they squashed their beef (quite literally), Taylor and Katy had a rocky relationship, to say the least.

After former Katy allegedly stole some backup dancers out from Taylor's nose, a (bad) blood feud began.

Katy tweeted this the day after Taylor gave an interview calling them "straight-up enemies." Oof.

No one comes for you quite like family, I guess.

In a now-deleted post, Kendall Jenner commented on a picture of Scott, his 20 year-old girlfriend, Sofia Richie, and his three children with Kourtney Kardashian.

Kendall commented, "awww scott and his kids" with a smiling emoji. But we all know that emoji was not expressing happiness.

Diplo took to Twitter to defend his then-girlfriend Katy Perry after Taylor Swift's single, "Bad Blood," dropped.

Body shaming was not about to fly with Lorde.

Her clapback at Diplo is too NSFW to be displayed—but I think it's pretty obvious what body part she's referring to.

This feud got so bad that it resulted in a physical altercation at New York Fashion Week.

Cardi, displeased with what she was hearing Nicki was saying about her, confronted her at a party—and then threw her shoe at her when things went sour.

She then took to Instagram to address their fight.

Adam Levine apparently took offense to Lady Gaga referencing a 15th-century painting in her single, "Applause," and decided to take to Twitter about it.

Kinda weird for a guy who would go on to star in a reality show where his contestants recycle old songs (so, art) for money, but whatever.

Honestly, I'm sure his opinion has changed since then.

God, there's nothing better than celebrities roasting Piers Morgan.

Piers replied, which was unnecessary, as John won that fight before it even started with his initial tweet.

He then bragged about being in the Entrourage movie while Cleese only appeared in the TV show, which is the definition of "weird flex, but okay."

Justin's fans did not take his breakup with Selena Gomez well.

They mercilessly trolled and bullied his then-girlfriend, Sofia Richie, to the point where Justin stepped in to tell them to stop.

Selena slid into the post's comments to defend his fans, and it got ugly from there.

I truly have no idea how to sum this fight up.

Jimmy Kimmel hired kid actors to recreate a bizarre interview Kanye did with the BBC, and that made Kanye angry.

Yeah, I don't know either. This was in 2013, and it still totally tracks with 2019 Kanye.

Charlie Sheen absolutely lost it after Rihanna allegedly turned down meeting his fiancée due to all the paparazzi outside the restaurant they were in.

Sheen ranted and ranted, to which Rihanna replied with one single tweet.

Queen Riri for life.

Iggy Azalea dumped fiancé after finding footage on their home camera of him bringing multiple women home.

Nick decided to respond by claiming he wasn't perfect.

Yeah, I think she figured out you were far from perfect, dude.

The breakup that spawned her biggest album to date was not without its social media drama.

After Pete fake-proposed and was rejected in an SNL promo, he said, "0 for 3."

Ari did not think that was cute, and tweeted the above. She then deleted the tweet, but the internet is forever.

Kanye posted a screen shot of his computer, which showed him torrenting software that Deadmau5 created.

When Deadmau5 responded, Kanye went on a Tweetstorm that was actually pretty funny, even though he was clearly in the wrong.

A quote: "# I’m bored ### when you get married will your wife have a giant minnie mouse head? # This brightened up my day… thank you dead-mow-five"

This feud popped off on Twitter, but it really came to a head...on Soundcloud.

No, really. Drake eventually got so fed up with Meek that he released a freestyle diss track on Soundcloud.

YouTuber fights do numbers. And they make almost no sense.

Logan Paul was not impressed with Shane's implication in his docuseries that his brother, Jake, could be a sociopath.

Logan released a video about it. When a fan asked if everyone was on Team Shane or Team Logan, Shane responded with this tweet.

Malik and Harris got into it over Taylor Swift's opinions on streaming rights.

The two sent jabs back and forth over who wrote their own music, before Zayn dropped the word "knickers" in the conversation and surprisingly diffused the fight.