PIC: See Justin Bieber’s Work Out Routine!

1300993235_biebs workout 290
 Robert Caplin/PSG

Bieber's gettin' ripped!

While greeting fans worldwide for his My World tour, Justin Bieber stays in tip-top shape with the help of a personal trainer — and only UsMagazine.com has the exclusive pics.

EXCLUSIVE PHOTOS: Justin Bieber's workout routine

Read article

At a backstage gym in Greenville, NC on Dec. 16 of last year, Bieber, 17, worked with trainer Dolvett Quince — perfecting his physique with chinups, bench-presses, stretches and much more.

Turns out that when fans aren't watching, the "Baby" singer doesn't mind showing off.

PHOTOS: Celebs with Bieber fever

Read article

The star "loves to run around with his shirt off all the time," Never Say Never director Jon Chu says in Us Weekly's Justin Bieber: My Private World.

He even showed his stomach to Rihanna earlier this year. "Justin Bieber just flashed me his abs," the "Only Girl" chanteuse Tweeted during a private dinner. "Wow! He actually had a li'l six pack!"

VIDEO: Go behind the scenes with Justin

Read article

Another thing that helps him stay lean: Although Bieber occasionally indulges in junk food like Doritos and Fruit Roll-Ups, "He's pretty good about his diet," his voice coach Jan Smith tells Us "He eats healthy."

For access to all our exclusive celebrity videos and interviews – Subscribe on YouTube!