New 52 Superman started out wearing a t-shirt, jeans, and the cloth that he was wrapped in as a baby as a costume, but soon found his Kryptonian suit The suit's coloration and markings changed ...

from the New 52 reboot of Superman from 2011. In this cover from Action Comics #4 by Michael Choi, we see a young Clark in his earliest hero days, before he could fly, and wore a t-shirt, jeans ...