Taylor Swift's highly public beefs with Scooter Braun and Scott Borchetta brought other stars out of the woodwork, some of whom defended the singer and others who got in Braun's corner.

On Sunday night, Swift, 29, posted a blistering blog slamming Borchetta for selling Big Machine, along with all six of her past albums' worth of masters, to Braun, whom she accused of "manipulative bullying" through his associations with former client Kanye West and West's wife, Kim Kardashian.

The "You Need to Calm Down" singer accused Braun of being a party to Kim Kardashian's infamous recording of Swift and West's "snippet" of a phone call in which she appeared to give her blessing to the lyrics to his song "Famous."

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Kardashian posted the video to Snapchat after Swift denied giving West permission to use her name in the song. She later claimed she objected to being called "that b---h" in the track, a detail which wasn't mentioned in Kardashian's clip. She was also livid at her nude likeness being used in West's "Famous" music video, a move she likened to "revenge porn."

Swift also alleged in her blog that she wasn't informed of the deal until she read about it in the news, a claim that Borchetta vehemently denied, pointing out that Swift's father, Scott, was on the Big Machine board of directors.

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However, Swift's rep told Variety, “Scott Swift is not on the board of directors and has never been. On June 25, there was a shareholder phone call that Scott Swift did not participate in, due to a very strict NDA that bound all shareholders and prohibited any discussion at all without risk of severe penalty. Her dad did not join that call because he did not want to be required to withhold any information from his own daughter. Taylor found out from the news articles when she woke up before seeing any text from Scott Borchetta, and he did not call her in advance.”

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Singer Halsey came to Swift's defense, writing on Instagram Sunday, "Taylor Swift is a huge reason why I always insisted to write my own music. I believed if she did it (in a way that made my teeth ache like cold water and my heart swell and my eyes leak) than [sic] I should too. She deserves to own the painstaking labor of her heart. She has surpassed all expectations of what any artist is capable of. She catapulted her stardom into the Milky Way. And it turns my guts that no matter how much power or success a woman has in this life, you are still susceptible to someone coming along and making you feel powerless out of spite."

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Mandy Teefey, mom to one of Swift's longtime BFFs Selena Gomez, posted a partial screenshot of the "Better Than Revenge" singer's missive and wrote, "@Taylorswift I wish I could give you a big hug right now! Thank you for speaking out about this and teaching future young artist about protecting themselves. I don’t understand the pleasure of power plays to simply hurt people! To deny you the option to own your blood, sweat and tears, especially as a young women who shared growing up in front of the world, is heartbreaking!!"

Teefey also tagged Braun's wife, Yael, who called Swift out for her remarks, and wrote, "@yael I would love to have a mom to mom meeting in private, drink some tea and have some real talk!! XO."

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Rapper Iggy Azalea tweeted, "I think from what I can see; it’s more about the fact they didn’t even give her the opportunity to at least bid on her own masters; when she’s made it known she wanted to purchase. I can totally understand where she’s coming from."

Singer Alessia Cara wrote on Instagram, "Hey!!!! Stop stealing from women who work hard!!!"

Jack Antonoff, who's produced several of Swift's songs, tweeted, "herbs- don’t f—k with artists."

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Haim, who toured with Swift, reposted a screenshot of her blog with a message of support.

Model Martha Hunt, who appeared in Swift's "Bad Blood" video, tweeted, "Taylor doesn’t deserve for someone who has constantly BULLIED her to OWN THE RIGHTS to her blood, sweat, + tears. It’s not the dark ages - artists shouldn’t be held down, and I couldn’t be prouder of my friend for standing up for what’s right. End of story."

"This is about protecting artists. Taylor courageously exposed a grown man who has time + time again proven his obsession with holding her down, like his reputation precedes him," Hunt added. "He doesn’t deserve a morsel of control over the archives of her past... Sad day for music, esp considering Taylor’s generous contributions to the industry. :(."

Fellow supermodel Sara Sampaio offered her thoughts:

Even "The Hills" star Spencer Pratt and "The Bachelorette" Hannah Brown chimed in:

One of Swift's most frequent and ardent defenders, Todrick Hall, blasted Braun — who was once Hall's own manager. Hall accused Braun of being "evil" and "homophobic."

He also slammed Braun for allegedly using Justin Bieber and Braun's wife Yael as mouthpieces following the scandal.

Demi Lovato and Justin Bieber each came to Braun's defense.

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The "Baby" singer was the first to speak out. He posted a throwback selfie with Swift and claimed that Braun discouraged him from writing "Taylor Swift what up" on an Instagram caption with Braun and West weeks after West's wife, Kim Kardashian, published potentially illegally recorded videos of Swift seemingly granting West her permission to rap about her in his song "Famous," which she had previously denied, citing the track's misogynist message. While the "Baby" singer was apologetic for their past interaction, he also accused Swift of trying to "get sympathy" with her blog post and that she used her platform to get her fans to bully Braun online.

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Model and actress Cara Delevingne slammed Bieber in his comments section, writing, "I wish you spent less time sticking up for men and more time trying to understand women and respecting their valid reactions. As a married man, you should be lifting women up instead of tearing them down because you are threatened. Not sure you understand what an apology is. This issue that Taylor is talking about is far more than a picture and you know that. As you said, you haven't talked to her in years which means you definitely don't understand the situation. I do. Take a step back and try and learn from this. We should all be on the same team. End of story."

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Braun's wife, Yael, called Swift out for her alleged dishonesty, writing, "Don't blame him because Kim caught you in a lie, it's embarrassing, I know — but adults own up to their mistakes," Yael wrote on Instagram. "We learn and grow from them, we don't divert blame and blur the lines of reality to suit our needs."

Lovato, who signed with Braun this spring, posted Instagram Stories about the Schoolboy Records founder, writing, "I have dealt with bad people in this industry and Scooter is not one of them. He’s a good man. Personally, I’m grateful he came into my life when he did. Please stop ‘dragging’ people or bullying them. There’s enough hate in this world as it is."

She added, "Y’all can come after me all you want but I’m always gonna stay loyal to my team. I value loyalty more than most people in this world and if my name is gonna be brought into conversations I’m gonna stand up for myself and the ones on my team."

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Lovato has previously called Swift out for various perceived offenses, including allegedly capitalizing on feminism though not necessarily embodying its ideals.

Braun himself has not commented publicly on her claims.