Corset Chart/Size Conversion Chart
CORSET CHART (generally bustiers and corsets run a size smaller than usual) so keep that in mind when shopping
size XXS-XS= size 0-2
size XS-S= size 2-4
size S/M= size 4-6
size M/L= size 6-8
size L/XL= size 10-12
size XL/XXL= size 12-14
size XXL/XXXL= size 14-16
free size= size 2-12 (generally these sizes are made using lots of spandex or any other stretch materials and fibers, and it forms to your body shape, allowing it to be wearable in an array of sizes)
Below at the bottom of this page is the corset/bustier size chart