Justin Bieber vs. Usher: Shirtless Showdown!

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It is on between mentor and protege.

According to the latest issue of Men's Health, Usher has "the best abs in the entertainment industry," a ranking that may very not sit very well with fans of the singer he discovered.

Seriously, have you see this video of Justin Bieber shirtless?!?

Usher will star in an upcoming film as Sugar Ray Leonard and says he's been training "like an athlete everyday" in preparation - and the guy does look good.

But better than Bieber with his shirt off?!? We'll leave this to the readers. Compare, contrast, drool and vote now:

And the Winner is?

It's an ab-off! Compare Usher with Justin Bieber now and decide who has the best abdominal muscles. View Poll ยป

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Justin Bieber Biography

Bieber in Thought
Justin Bieber is a young, wildly popular singer. He dominated the music world in 2010, earning the most YouTube videos AND becoming the... More »
Born
Birthplace
Ontario, Canada
Full Name
Justin Bieber