I bought several of these at Target online (Originally $18.99) On sale for buy one get one half off. I read the reviews and one woman said she bought the bra two cup sizes smaller. These do run large, but not that much!
I wear a 34DD at VS and after trying on several sizes I fit a 36C in this sports bra.

Does the job for someone larger chested but in boot camp classes some larger movements do create bounce. Great for spinning, walking, weight lifting, etc. Not for step areobics or something with with similiar motion if you're my size.

Great product for the price!