2012: Not going to lie, we're grateful for the tight t-shirt in this photo... HEY MUSCLE.
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19 Photos Of Joe Jonas' Body Transformation That'll Get You Down The Gym ASAP

8. 2012: Not going to lie, we're grateful for the tight t-shirt in this photo... HEY MUSCLE.
Showing off some serious arm muscle in a tight white t-shirt, we think we might be crushin' hard on 2012 Joe Jonas. Picture: Instagram/Getty