I have 40DD and I have had the WORST time finding bras that are supportive without being squishy or reducing my ability to breathe properly. And let me tell you, running a half marathon and not being able to breathe is terrible! This bra is very supportive, the underwire is comfortable, and it doesn't strain my neck like I was afraid of. I highly recommend for any big busted athletic girl like me. Getting it on and off is a little awkward, but it gets easier! I recommend!

EDIT: Had to change my review, unfortunately. After owning two of these bras for a little over a month, both have obvious signs of damage, which tells of poor product manufacture, in my opinion. I only wear them for an hour or so at a time, two times a week per bra. I wash them in a gentles bag, on cold, air dry only. However, one bra, the adjustable strap has frayed to almost the point of me being unable to use the item. My second bra, which I have worn even less than the first, came out of the wash with the wire completely poking out on the side. I take very good care of my bras, as bras for big boobied women are quite expensive, so I was extremely disappointed that these did not hold up as usual Champion products. :-/