For waist training corsets, the waist measurement is key when sizing for corsets. Please do not use the Amazon size guide. Corsets are designed to cinch the waist and lift the breasts. Lacing in the back allows the corset to be adjusted for comfort.Size details:Tag M/Bust: 69cm, Waist: 65cmTag L/Bust: 74cm, Waist: 70cmTag XL/Bust: 79cm, Waist: 75cmTag 2XL/Bust: 84cm, Waist: 80cmTag 3XL/Bust: 89cm, Waist: 85cmTag 4XL/Bust: 94cm, Waist: 90cmTag 5XL/Bust: 99cm, Waist: 95cmTag 6XL/Bust: 104cm, Waist: 100cm