From Net-A-Porter site: Deiji Studios understands the quiet beauty of simple clothes. This 'The Slip' dress is cut from stonewashed French linen and has dainty ties at the waist to adjust the relaxed shape. Details: Dress Linen Waist ties Side slit Slips on Mid-weight, non-stretchy fabric Machine wash 100% Linen Size & Fit Model is 175cm/ 5'9" and is wearing a size Xsmall Designed for a slightly loose fit, use the tie belt to cinch in at the waist Fits true to size, take your normal size // New with Tags, never worn, bought and realized my hips have increased since pregnancy and I need a size small instead of x-small