For rectangle body shapes, opt for dresses that create curves and define the waist. A-line, wrap, and belted dresses are flattering, as they cinch the waist and add volume. Peplum styles add shape to flat buttocks, while ruched and color-blocking dresses can give the illusion of a curvier silhouette. Highlight your toned arms and legs with sleeveless and short dresses. Choose necklines based on your bust size to accentuate or balance your figure.