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25 November 2012, 07:48 | Updated: 25 November 2012, 07:54
The 'Beauty And A Beat's singer has been working hard to get bigger muscles in the gyn.
Justin Bieber showed his hard work at the gym has been paying off after sharing a picture of his toned physique with fans on Twitter.
The 'Boyfriend' singer, who revealed earlier this year he wants to put on more muscle, posted a shot of him after working out in the gym this week.
"Back in the gym," Justin tweeted, alongside a picture of himself posing in the mirror after a heavy gym work out.
Justin is seen stood in front of a rack of dumbbells with his shirt off, also showing off his numerous body tattoos.
Check out a picture of Justin Bieber posing after his gym session this weekend below (Credit: Twitter):
"I've been working out in the gym, getting bigger, trying to get sexy for the ladies," Justin told fans at a recent live show, reports The Sun.
The 'As Long As You Love Me' singer, who brought his 'Believe' world tour to his home country of Canada this weekend, has also been spending time with his family.
Justin shared a picture of himself with brother Jaxon and sister Jazmyn, and admitted he "loves' being a big brother and getting to spend time with his siblings.
"My lil bro and sis seeping," Justin posted with the picture. "Random - I love being a big brother @jaxonbieber @jazmynbieber.
View a picture of Justin Bieber with his two siblings below (Credit: Twitter):
Justin Bieber had a hugely successful outing at the American Music Awards 2012 last weekend where he picked up three awards including Artist Of The Year.