When you look into the rules further it states
(d) Running with a bare torso is prohibited. Athletes must wear a shirt, jersey, or sport-top at all times during the run segment of the Race; (1:00 Minute Stop-and-Go Time Penalty, DSQ if not remedied promptly)
(e) Uniforms with a front zip must not be undone below the point of the end of the breastbone (sternum); (DSQ if not remedied promptly)
My question is for females - if you wear a tri suit with a front zip can you pull it down to your waist if you have a sports-top?