Generally, you must always wear your tux with studs but, it is not a must. Men can have a choice of using them or not. It will also depend on the occasion you are attending and if it’s needed. You can wear tuxedo studs if you wish but you have to make sure that they match your tuxedo’s shirt packets. You can even wear one if you are wearing a bow tie but this is not needed at all times. But if you want to sport the traditional look and complete the accessories, adding studs are good as well.