From page 1 of “Action Comics” #1, scanned from a 1970s reprint.
questionable class consciousness revealed in Superman’s sartorial shifts
Brilliant, lesstraveledby! “Questionable class consciousness revealed in Superman’s sartorial shifts.”
Regarding the costumes of class, it would appear that strength is blue collar, speed and upward mobility are white collar, and that being at the pinnacle of social power means wearing lurid pajamas in public without embarrassment.