Sweetheart Corset Royal Blue with front steel busks closure from Bonitaz Corsets. Classic shaped corset top is also known as over bust corsets. Featuring light weight silhouette boning. Corset has adjustable lace-up ribbon in the back for a proper fit. For heavier boned corsets, please see Steel Boned Corsets. All corsets fit smaller than normal US sizes. Please note Bonitaz Corset sizes fit smaller than typical US sizes. It is important for customers choose mainly based on their waist size. Waist 26 inches - 28 inches. Bust 34 inches - 36 inches. United States dress sizes 4-6.