I ordered the 34E. Fits well but I still bounce when doing jumping jacks or other aerobics.  Not as much as other bras but I still need to wear this with a tank which has a bra included.  I wore it to work under a dress and loved how it lifted the girls, gave me a nice round full look, and did not dig into my shoulders.  So in the end it's versatile...functions as a day bra and functions as a sports bra.