We don’t know what year or grade this is, but in a class of 56 students, 18 guys wore the same Hawaiian pineapple shirt for picture day. It wasn’t a club with uniforms; it was one shirt passed from student to student before they had their photo taken. That’s not the kind of thing anyone would notice (outside of the photographer) until the yearbook came out months later.
My husband’s senior yearbook (class of 1973) was a little like this. Seniors were supposed to dress up, meaning a jacket and tie for the guys. But he and five of his friends all forgot, and ended up wearing the same borrowed shirt, jacket, and tie. No one thought anything of it at the time, because they looked good, but forty years later, anyone who sees the yearbook has to comment that every longhair in the class dressed alike.