Gotta agree with that.
I've been trying to figure out how a bra could give you an unfair advantage....guess you could go for aerodynamics with a Madonna style come bra.
Hey, since you break the tape with your chest, should a padded bra be illegal? Instead of "winning by a nose", you could [censored].
I suspect this rule is to prevent swooshes and the like. Usually athletic conference rules simply stipulate "no logos". Not sure why this rule doesn't.
Rules like this have been on the books and enforced literally for decades. A relay team from my HS was once disqualified at a state meet because of it, and we always took great care to ensure that the "same uniform" rule was followed closely.
The rule's a bitch, but I think every relay team I've ever come into contact with was aware of it.
Never thought it would extend to underwear, though....