I am training for my first sprint triathlon in the beginning of July and am looking to purchase a tri-suit. I need some help finding a top with good support. I am a C/D cup and don't want to be bouncing during the run. It seems as if most suit tops have shelf bras, but I don't think that that will be enought support. Will I have to wear a tri-bra top and then a tri-tank over that to get enough support? I am worried that will increase potential chafing.

Any suggestions from more experienced, larger that average chested triathletes would be welcome.

Thanks!