Justin Bieber Flaunts His Baby Six-Pack Abs On Instagram (PHOTO)

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Justin Bieber has once again taken to social media to share his favourite past-time -- taking his shirt off -- with the world.

The 19-year-old pop star flaunted his toned torso in a series of Instagram pics following a stop on his Believe tour in Denver, which show a topless Biebs giving his lady fans an eyeful of his burgeoning baby abdominal muscles.

The snaps are un-captioned -- no explanation for these abs necessary! -- and altogether have more than 1.5 million 'likes' already (not to mention, some very inappropriate sexual comments from over-zealous females).

Selena Gomez's ex's shirtless selfies are just the latest in a series of somewhat bizarre attempts for the singer to shed his wholesome image for a manlier look. In the past year alone, naughty Biebs has tweeted photos of fans' bras, allegedly canoodled with Hooters waitresses/aspiring models (ahem, Jordan Ozuna), and of course, inexplicably stripped down at a Poland airport (maybe J.B. just hates shirts?).

Lookin' good, J.B.!

justin bieber abs

justin bieber instagram

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