Demi Lovato showed up on The Late Late Show with James Cordon, and naturally ended up belting out a bunch of songs (it's what she does best, after all). The catch? She and James Corden had a "diva riff-off" after he claimed "Divas back then are just better than divas are today."
Um, how dare you, sir. Fortunately, Lovato sang Adele and Katy Perry to prove her point that our beloved circa 2017 divas are legit, and completely slayed while she was at it.
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Also James Cordon sang Tina Turner and Aretha Franklin. He did not slay.
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