theres a issur of lo salach achrei rabim lehatos so if the roshei yeshivos and the gedolim are wearing white shirts we shud try to be as much as them like we can and do everything they do also i heard of from a shmuz of the alter of kelm the rosh yeshiva was saying the same way a limo driver wears his uniform we also have to always wear our uniform and thats why he has to wear a frock kaz less then that dosent pas and thats why we have to wear a hat and jacket werever we go kaz thats wat our uniform is