You know your Justin Bieber cover is good when the man himself endorses it. We were blown away by Ariana Grande's cover of "Die In Your Arms" -- and so was Justin. The "Victorious" star took the jazzy love anthem and added a light, ethereal touch that's just as good as -- or even better than -- the original. Watch and listen as she plays the piano, sips soda with her best friend Alexa and dances on a retro-fab set.

This weekend, the Biebs tweeted "WOW..u killed it @arianagrande #dieinyourarms" on Saturday. Of course, the video went viral soon afterwards, quickly gathering almost 800,000 views. Watch the video above to see her buzz-worthy performance for yourself.

Ariana is the latest in a string of artists the Biebs has given his Twitter stamp of approval. Earlier this month, he called budding 13-year-old singer Madison Beer a "future star", causing her name to trend worldwide and her cover of Etta James' "At Last" to rack up more than 200,000 views on YouTube. And let's not forget Bieber's first big success: Carly Rae Jepsen.

Arianators who have been patiently waiting for more music from their favorite "Victorious" star won't have to sit tight for much longer. This spring, Ariana told Teen.com that her upcoming album is almost finished and that she's already chosen her first single.

What do you think of Ariana's cover of "Die In Your Arms?" Is it even better than the original? Sound off in the comments below or tweet @HuffPostTeen!

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  • June 2012

    <em>Forbes</em>, June 2012

  • June 2012

    <em>Billboard</em>, June 2012

  • May 2012

    <em>Seventeen</em>, May 2012

  • April 2012

    <em>Complex</em>, April 2012

  • January 2012

    <em>V</em>, January 2012

  • March 2011

    <em>Rolling Stone</em>, March 2011

  • January 2011

    <em>Twist</em>, January 2011

  • February 2011

    <em>Vanity Fair</em>, February 2011

  • January 2011

    <em>LOVE</em>, January 2011

  • January 2011

    <em>GL</em>, January 2011

  • October 2010

    <em>Teen Vogue</em>, October 2010

  • October 2010

    <em>Seventeen</em>, October 2010

  • May 2010

    <em>Tiger Beat</em>, May 2010

  • April 2010

    <em>People</em>, April 2010

  • March 2010

    <em>Billboard</em>, March 2010