A cut-out works when it looks deliberate — placed where the body naturally narrows, not simply where fabric is missing. This edit favours the considered kind: a single waist opening, an asymmetric shoulder, a keyhole at the back or a slice below the bust. Most are engineered rather than decorative, with the opening reinforced so it holds its shape through an evening rather than gaping. Lengths run mini to maxi in satin, jersey, bandage knit and mesh. Because the openings sit close to the body, fit is the whole thing — our cut runs relaxed, so if you're between sizes take the smaller one. Check the placement against what you'd wear underneath before choosing.