The fake collar is the most featured accessory for shirt, blouse, dresses and any collarless. It features adjustable straps that fit seamlessly under a shirt without creating a bulky loo. It fits any bust sizes. One Size fits Most. ( Not for XXL or above) PleatedCollar: Neckline Perimeter: 16.93", Front Length: 11.02", Back Length: 7.88", Shoulder: 13.39". OrganzaNeck: Neckline Perimeter: 18.11", Front Length: 11.42", Back Length: 11.42", Shoulder: 14.17". BackHook: Neckline Perimeter: 16.54", Front Length: 11.81", Back Length: 10.63", Shoulder: 14.17". ClassicCotton: Neckline Perimeter: 16.54", Front Length: 11.81", Back Length: 11.81", Shoulder: 14.17". LightLace: Neckline Perimeter: 15.75", Front Length: 10.24", Back Length: 7.88", Shoulder: 13.78". FloralLace: Neckline Perimeter: 16.54", Front Length: 11.02", Back Length: 7.88", Shoulder: 13.78". ClassicLace: Neckline Perimeter: 16.54", Front Length: 11.81", Back Length: 11.81", Shoulder: 14.17". HollowNeck: Neckline Perimeter: 17.32", Front Length: 11.81", Back Length: 7.88", Shoulder: 13.78". ClassicBead: Neckline Perimeter: 16.54", Front Length: 11.81", Back Length: 11.81", Shoulder: 13.78". OrganzaLady: Neckline Perimeter: 16.54", Front Length: 11.81", Back Length:11.81", Shoulder: 13.39". BowTie: Neckline Perimeter: 17.32", Front Length: 11.81", Back Length:11.81", Shoulder: 13.39". FloralChiffon: Neckline Perimeter: 16.54", Front Length: 11.81", Back Length:11.81", Shoulder: 13.78". Cuff: Sleeve Perimeter: 8.66", Width: 3.94" Tips: This fake collar have adjustable or strech straps to prevent it run to other positions. Can use a pin fix the false collar on the shoulder position. There may be 1-2 cm differences due to manual measurement.