Fellas, look away! Ladies.. TAKE A PEEK! Justin Biebs is all grown up and that’s evident in these pics! He went from scrawny little boy to… grown! Justin went shirtless as he posed up with his personal trainer in a shot posted on Instagram on Wednesday. He’s come a long way! Bieber looked a lot less defined last year. Bieber has said before he wanted to work on his muscles to ‘look sexy for the ladies’. See the photos of his hardwork below!