Nope except for pledge pins. The peldge pins could only be worn on collared shirts. Whch meant we had to wear collared shirts all the time. Sometimes pledges didn't pick up on that and would wear t-shirts and no pins. You can bet they were told what was meant by "only with collared shirts". Of coruse, the pins had to be removed on the rare occasions we we were able to partake in certain bevergaes.