To find out which size fits you best, you can measure your body.
Important when measuring is that the measuring tape lies on the bare skin and is not pulled too tight.
If you don’t have a measuring tape, use a piece of string and hold it alongside a ruler.
A | Measure your bust around the fullest part of your chest while wearing your normal under garments. B | Measure your waist at the smallest part. C | Measure the size of your hips below your waistline at the fullest part.