Robert Downey Jr., Justin Bieber, Amanda Bynes and other celebrities are just like us. For example, sometimes they screw up and get arrested. Actually, quite a few of them screw up and get arrested. We always see Hollywood A-listers at their very best, looking flawless for the camera as they walk the red carpet. That's why celebrity mugshots are such a gem. Seeing them at their absolute worst serves as a beautiful, entertaining reminder that they aren't very different from the rest of us. That's why we are bringing you the 11 must-see celebrity mugshots. Sit back and enjoy.