After reading the other reviews I purchased one size larger (42D) than I normally wear (40D) but stayed with same cup size. Fit was perfect.  I have had many other brands of sports bras. However, this one has been the most comfortable while providing good support! I would most probably purchase again in the future! Reason for 4 stars is that the material in the cups tends to pucker a bit at the top of each. But, performance is still good. Wish this bra wasn't so expensive.