12 Pop Star Feuds You Totally Forgot About Because Fighting Over Aaron Carter Is So 2003

The worst thing about having a higher-than-average interest in celebrities is when your faves just can't get along. It's bound to happen, though — Hollywood is like one involved, never ending Mean Girls sequel, and it'll take a lot more than Tina Fey to put everyone's friendships back together again. Of course, people just aren't built to like everyone and award shows would be super boring if they did. And now that Twitter and Instagram have arrived to perpetuate petty arguments, there are more than a few pop star feuds that might've already slipped your mind.

From Miley Cyrus's golden days on the Disney Channel to Drake Bell pissing off every Belieber on Twitter, here are 12 feuds between pop stars that, while in the past, are still very, very real.

Hilary Duff vs. Lindsay Lohan

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Let me take you back to the early 2000s, when Hilary Duff’s hair was crimped more often than not and Lindsay Lohan was about to become a household name…

Hilary Duff vs. Lindsay Lohan

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They both liked the same guy, Aaron Carter, and… it didn’t end well. Allegedly, Carter left Duff for Lohan because he “got bored,” and this didn’t exactly bring the two reigning queens of teen together. And as we all know, Carter would later live to regret this decision, and end up giving us all kinds of secondhand embarrassment when he professed his undying love for Duff on Twitter.

Nicki Minaj vs. Mariah Carey

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Well, we all know where this one started.

Nicki Minaj vs. Mariah Carey

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As it turns out, Nicki Minaj and Mariah Carey hated each other from the second they first took their seats in the American Idol judges chairs, and it all went downhill from there.

Britney Spears vs. Justin Timberlake

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Also known as the most heartbreaking feud of all time. Britney Spears and Justin Timberlake were obvs meant to be… until, of course, they broke up in 2002 and shattered all of our dreams of the most perfect union ever.

Britney Spears vs. Justin Timberlake

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Timberlake eventually wrote “Cry Me A River” about their breakup, and now that Timberlake is married to Jessica Biel, all hopes of a reunion are pretty much down the drain.

Miley Cyrus vs. Selena Gomez

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This is a throwback to the days of the supposed love triangle between Cyrus, Gomez, and Nick Jonas… and it definitely doesn’t sound like Cyrus is over it.

Miley Cyrus vs. Selena Gomez

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On her most recent tour, she sang her song “FU” while slinging around a cardboard cut out of Gomez, so it’s probably safe to say they won’t be sending each other heart eyes emojis anytime soon.

Christina Aguilera vs. Eminem

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It’s kind of odd that these two would even cross paths enough for a feud to exist, but it totally happened.

Christina Aguilera vs. Eminem

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It all started when Aguilera dissed Eminem in a special about the making of one of her very first singles ever, “What a Girl Wants,” and Em got annoyed that she was talking about his personal life. Cue a few rude raps on Eminem’s “The Real Slim Shady” about Aguilera.

Justin Bieber vs. Drake Bell

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Justin Bieber and his various feuds with different celebs could make a book all on their own, but Drake Bell was one of the most vocal in the fight against Bieber.

Justin Bieber vs. Drake Bell

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Bell wasn’t shy about slamming the singer on Twitter at every opportunity, and Bieber’s fans attacked in force. If there’s anyone you don’t want to mess with, it’s Beliebers on a mission.

Selena Gomez vs. Demi Lovato

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Selena Gomez and Demi Lovato used to be BFFs, but when Gomez started buddying up to Taylor Swift, Lovato was less than impressed.

Selena Gomez vs. Demi Lovato

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This eventually led to one of the most cringeworthy moments ever: Lovato replying, “Ask Taylor” with a fake grin when a fan asked how Gomez was doing. Ouch.

Rihanna vs. Ciara

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Homegirl can write a catchy tune, but Rihanna kind of scares the hell out of me… which is why my thoughts are with Ciara if she is, indeed, on RiRi’s bad side.

Rihanna vs. Ciara

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After Ciara said Rihanna wasn’t very nice on Fashion Police , Rihanna didn’t hesitate to blow up Ciara’s Twitter in revenge.

Miley Cyrus vs. Nick Jonas

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This feud is more sad than anything else.

Miley Cyrus vs. Nick Jonas

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After their breakup, Cyrus created a Nick Jonas-themed music video for her single, “7 Things,” in 2008, and years later in 2013, Jonas came up with his own Cyrus song — “Wedding Bells,” about finding out that Cyrus was engaged to Liam Hemsworth. That relationship obviously didn’t work out, but now, Jonas seems pretty happy with Olivia Culpo, so all’s well that ends well, right?

Raven-Symone vs. The Cheetah Girls

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It's heartbreaking to think that

the stars of the Disney Channel movie The Cheetah Girls were not, in fact, cheetah sisters behind the scenes.

Raven-Symone vs. The Cheetah Girls

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As it turns out, Raven admitted that there were “territorial issues” and fighting that led to Raven opting out of the third movie. Bummer!

Miley Cyrus vs. Sinead O'Connor

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This time last year, the fight was real between Miley Cyrus and Sinead O’Connor on Twitter.

Miley Cyrus vs. Sinead O'Connor

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If you’re a little fuzzy on the details, it all started because Cyrus compared her video for “Wrecking Ball” to the one for O’Connor’s song “Nothing Compares 2 U,” and O’Connor did not like the comparison. This led to a full blown Twitter war, and as far as I know, it could totally still be happening.

Christina Aguilera vs. Lady Gaga

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It’s no secret that Gaga is willing to do the rounds with anyone who should come her way, but this time, it sounds like the feud with Christina Aguilera was totally unfounded. When Aguilera was accused of copying Gaga’s look in 2009, Aguilera acted like she had no idea who Gaga was, which is impossible. Who doesn’t know who Lady Gaga is?

Christina Aguilera vs. Lady Gaga

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“I’m not quite sure who this person is, to be honest,” Aguilera said at the time. “I don’t know if it is a man or a woman. I just wasn’t sure. I really don’t spend any time on the Internet, so I guess I live a little under a rock in that respect.”