Busty newbie looking for help!!

I have heard of people wearing their sports bras under their swimsuit and just putting shorts on over the suit for bike and run.  I don't know how the cotton part of your sports bra would work when wet, but make sure to try any changes you make before race day.

When someone makes a "claim" like that, someone will invariably post a "Worthless without pics" comment...

I won't be the one to say it, though...

Same situation...

Moving Comfort Fiona is my favorite, and it dries well after the swim.
The Helena is comfy for bike rides, but wouldn't use it for running.

Like earlier post... shorts, tri top, and sports bra.

HAVE FUN!!!

Is it an open water swim?  If you are using a wetsuit you should be able to dress the girls appropriately and not have to change for the bike/run.

I'm not busty, but I'll be wearing a tri suit at my first race in May.  It's very supportive.  I like the idea of being fully dressed from start to finish and not having to bother with anything but socks and shoes.

As others have mentioned, Moving Comfort makes great sports bras.

For the D/DD woman, the Fiona is ideal for cycling and running; it's only drawback is that it is not racerback and most tri suits/tops are racerbacks. If you want a racer back, you could try the Juno though you have to be a contortionist to get it off/on. It will keep you locked in place but it will feel like you're locked in place. Otherwise, stick with the Fiona. Very comfortable and supportive.

Moving Comfort has a new racer back, like the Juno, that is supposed to be easier to get in/out of than the Juno and more comfortable but I can't remember the name of it. I don't see it on their website, so it might not have released yet. Call your local running store and ask them about it. Or, call Moving Comfort and ask them.

I've tried the Enell. I couldn't breathe in it and I kind of like to breathe when I'm swimming and breathe deeply on the run. But check it out yourself; YMMV.

Another Fiona fan. Keep your eyes open and you can find them on sale. I found one at a local store for $30 a couple of weeks ago.

I got your back...

Also recommended for best first post ever.   We really should have a sticky for that.

Titlenine.com has some good bras. they rate the bras on barbells, so the more barbells, the more support. I also just wear a sports bra under my swimsuit.

Another vote for Moving Comfort--had good luck with Fiona and Maya. (I range from a 34D when skinny to a 38DDD and beyond when not so skinny).

Surprisingly, for a long time Champion had a good one in C/D which, if I got with a big enough band, worked great.

Enell and CW-X did not work for me, but again, everyone's individual.

My wife's an F.  She swears by the Moving Comfort Fiona's too.  We've even found them on clearance for $15

We've found the champion ones online, but because they don't list big enough, she's a try on in the store kinda girl, and no place around here stocks them.

I love the Fiona, but I did have serious chafing once they get old.  If the band starts to pill (get little fuzzy lumps), it's time to invest in a new one.  I also always body glide.  Otherwise no issues!  The Fiona has been great from 5k to IM. 

I get some chafing from the Moving Comfort Calli...but it's the most supportive sports bra I've found, so I just slather a ton of body glide on and that will usually keep me comfortable.

I will have to check out some of these others that you've all suggested...the Juno looks good.