Here is the size chart for choosing the Watery Pelican wetsuit for women. The measurements are taken with the suit laid flat and without stretch. The wetsuit will stretch both with use and in water, adapting to your body during swimming. Therefore, choose the size that aligns most closely with your measurements.
If you find yourself between two sizes, opt for the one where you match most of the measurements. Generally, the most important measurements are bust and height (ankle to shoulder).
A wetsuit should not fit too loosely. If there are many air pockets or "pouches" around the suit, it is too large for you.