"BTS @Allure_magazine cover shoot.. #nophotoshop pic bc I'm proud to show my body the way it naturally is #CONFIDENT" Demi Lovato tweeted.
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LeAnn Rimes and Brandi Glanville have shown their hatred for one another many times on Twitter.
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Kanye West lashed out at Jimmy Kimmel on Twitter in response to a joke Kimmel made about the rapper.
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Adam Levine (allegedly) reduces Lady Gaga to an art teacher in a tweet regarding her music video for "Applause."
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Miley Cyrus sends a below-the-belt tweet in response to Sinead O'Connor's open letter advising Miley not to let her sexuality overshadow her talent.
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Taylor Swift calls out Nicki Minaj after thinking Nicki targeted her in a tweet about the VMAs.
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Chris Brown got ugly with comedy writer Jenny Johnson in response to an unfavorable joke she made about him on Twitter.
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Lady Gaga and Perez Hilton make their feelings for each other very clear on Twitter.
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Louis Tomlinson vs. Zayn Malik and Naughty Boy in a petty war of the words on Twitter.
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Lorde shot back at Diplo on Twitter after joking about her BFF Taylor Swift's small butt.
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Ariana Grande reacted via Twitter after Bette Midler commented that young singers like Grande look "ridiculous."
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Amber Rose and Khloe Kardashian shared some words on Twitter after Amber accused Tyga of leaving his family for Khloe's 17-year-old sis Kylie Jenner.
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