Bieber hots up Instagram
Justin Bieber showed off his six pack in an Instagram post. (Instagram)
Justin with low slung jeans and backwards baseball cap for the snapshot. (Instagram)
Justin Bieber (GETTY/GALLO)
Justin Bieber and Jimmy Fallon interaction during a taping of 'Late Night With Jimmy Fallon' at Rockefeller Center in New York City. (GETTY/GALLO)
Justin Bieber, right, accompanies Los Angeles Clippers guard Chris Paul's son, Chris, during an NBA basketball game between the Los Angeles Clippers and the Boston Celtics in Los Angeles. (AP)
Singer Justin Bieber carries the train of his girlfriend, singer Selena Gomez' dress, as they arrive at the 2011 American Music Awards in Los Angeles. (REUTERS)