The uniform in Australia is shirt with collar and belted pants.
However, I once filled in for a referee - and didn't have my full uniform in the car, so wore black track pants with press studs down both legs. On a quick change of direction my thumb got caught between studs, and proceeded to rip off my pants. I was left trying to run up the court with my pants around my ankles with only a pair of bike shorts on!
Oh and by the way - I was 23, this was a Under 18's Girls game, and there was one particular player that I was reasonably interested in - it was fairly difficult to make eye contact with her for quite a while
(She now plays for the University of Virginia).
So there you go - uniforms can make a difference!