TBABY - I have the same problem. I've never found a sports bra really. I may have seen a couple online but the price & the likelihood they would not even fit after ordering & waiting for them to be shipped discouraged me from ordering.
I wear a 42H bra from Cacique; I say "wear" because by measurements I'd actually be about an O cup, which does not exist anywhere I have ever seen including online. The bras I have are the best I could find, in ones I could try on in person.
That said, here's what I do for exercise: I wear a comfortable, non-chafing underwire bra (42H). Over top of it I wear a soft cup/no underwire bra that is a couple of sizes too small, I think 40 F? I can't remember. It's I think one band size and one or two cup sizes smaller than my "correct" bra I wear daily. This basically creates an encapsulation/compression situation out of 2 bras.
TRY STUFF ON to find the right combination for you! Start with a comfy bra that you could wear anyway and doesn't pinch or chafe you. Wear that to the store, and try on some softcup/non underwire bras in a range from 1 band size/1 cup size, 2 band size/1 cup size, 1 band size/2 cup size, and 2 band size/2 cup size too small. In addition to their recommendations to jump up and down and so forth, be sure that the smaller band size is not so small that it's cutting into your skin! When you try them on, take a deep deep breath. If the band cuts or you can't breathe in all the way, it's too small. It should be snug, but you want the pressure on your breasts, not your ribcage. So you might end up with say, your normal band size but 2 cup sizes smaller working best, or something like that.
I hope this helps! It's the only thing I've found to work at all. I still do have some bounce if I literally jump up and down, but I can run and do the elliptical and all that stuff without major pain or bouncing.
- 9/20/2012 3:02:59 PM