The following measurement and conversion can help you choose the correct size. The measurements given are of the body and not of the garment.
A. Arm length
Measure from the center back of your neck, across your shoulder to your elbow and down to the edge of your wrist
B. Breast
Measure under your arms, around the fullest part of your bust
C. Waist
Measure under your natural waistline, keeping the tape slightly loose
D. Hip
Measure around the fullest part of your hips