Times sure have changed, I remember doing my PPL and getting politely asked by the CFI of the aero club to take my safety pins out of my ears when doing my flying lessons, because they were scratching up the headsets
Seriously you're a bunch of students FFS, you shouldn't be wearing uniforms at all. Epaulettes should be illegal if you're not flying something that at least burns kerosene and has some paying cargo down the back