Please note that these measurements are based off the garment laying flat and not stretched. These are meant to be worn as fitted garments with some compression. 

To find your approximate size, subtract 1.5~4.5" from your under bust measurement depending on the desired fit. The under bust of the garment is less stretch than the chest measurement. We recommend subtracting 5~7" from your chest measurement. 

Note:  Styles do vary in fit based on the cut but should be close except for the o-ring bra which runs smaller. We recommend joining the FB group or looking on IG for fit differences between styles.