Justin Bieber gets his driver's license

Justin Bieber - who just turned 16 in March - hit a DMV office in Atlanta yesterday where he was seen posing for a pic at the DMV photo booth ... seems like somebody's DRIVING!!!!!

Our well placed sources at the DMV tell us Bieber rolled through the office with his mom -- didn't have to wait in line ... and ultimately, got a little photo session at the DMV license counter.

Bieb's rep wouldn't