A princess line dress is a more dramatic take on the A-line cut. Vertical seams extend from shoulder to hem with the skirt curving outward at the waistline. This produces a slimming effect because these vertical lines draw an observer's eye lengthwise down the seams of the dress. Thus, creating a lean, long, linear look, which benefits shorter women or those with wider waist lines. The cut and fullness of these dresses hide larger hips and thighs as well.