transitions/clothes

My first isn't until August, but I had the same concern.  Since a baithing suit is not supportive enough up top, the women on this site suggested that I pick up some tri shorts (like bike shorts but with less padding) and simply do everything in those and my sports bra.  I will throw a light top on in T1.

Good luck and have fun!!!

Tri shorts are the way to go; I did my first tri in bathers and put shorts on for the bike and run.  Even though it was only a super sprint, the marks from chafing last for days and it was really painful.  A tri top (with a sports bra underneath if you need the support) with save you having to struggle into a t-shirt when wet which a) loses you time, b) is annoying and c) makes you feel like a dill when the chick next to you takes pity on you and pulls it down at the back  Have a blast, you never forget your first.