Note: Free size,usually means size M,but it may fit size S to L because it's liberal design.
WOMAN'S SIZE CHART
How to Measure?
Measure under your arms around the fullest part of your bust.Make sure to keep the tape level.
Make sure the measuring tape fits comfortably as you measure around the narrowest part of your natural waist.
Stand with your feet together,and measure around the widest part of your hips.