Our sizing is based on standard US sizing. Please see the chart below to determine which size will be best for you. The measurements are those of the actual garment, so, depending on your height and voluptuousness, the nightgown’s length will vary on you. Our model is wearing a small-medium, is 5’7″/170 cm and weighs 130 pounds/ 59kgs. 

Size chart measurements values
Simone nightgown measurements