Carrying normal Gr.36 / 38 at the tops - ordered on the basis of reviews of other buyers I had already L (here indicated with size 40) - but still missing 10 cm and it is also no aperture / tongue under the lacing so that you can not open, if you want nihct backless wear.
But since I find the shell very nice, I'll try again now with size XXL
Just to note - had many corsets also from Asia, always cut very small and there has otherwise Gr.M / max.L always fit.