I have had 2 or 3 of this bra, and it is pretty supportive (I'm a 36D) and lasts for awhile. But my problem with this bra came up in the summer -- once you are sweaty, the heavy cotton stays wet (and I am not a very sweaty exerciser!). This isn't too big of a deal if you're just doing a 30 minute run then promptly changing your clothes, but if you're going to be exercising for a longer period of time and/or can't change your clothes immediately, it's kind of disgusting and unhygenic to have the sweaty material against your skin.There are other bras that are more supportive and are made of material that wicks away sweat. (For example, I have switched to Champion's Powerback Sports Bra.)