In the Marvel Cinematic Universe, Steve Rogers is shown to be a member of SHIELD (or at least very closely affiliated). Almost every other member of SHIELD wears what appears to be a standard uniform.
Rogers on the other hand does not. Even when just hanging out in briefings in the Avengers he wears his star-spangled outfit. They never really cover his outfit, just that he has superhuman strength and special shield. Even in Winter Soldier he is shown fighting in civilian clothes with his shield.
So is Steve outfit special, and if not, why doesn't he wear standard SHIELD gear?