Happy Flashback Friday, M Girls! What better way to celebrate than with flashback pictures of the biggest boy band ever: One Direction?! We compiled pics from 1D's baby years, awkward teenage years, and even from their beginning as a band on The X-Factor. After a long, hard day at school, sit back, relax, and LOL as you click through this gallery of 1D's best flashback pics ever.
Which flashback pic is your fave? Tell us in the comments!