The best way to look taller is to wear monochromatic clothing, it will help you not only look taller, but slimmer as well. Pinstripe suits will make you look taller because the stripes will elongate the body. As for dresses, choose one that stops just above the knee -- this will give the illusion of longer, leaner legs. Keep your outfits simple and fitted. You don't want to look like you're swimming in your clothes (this would make you look shorter, rather than taller!). Try to purchase petite sizes that follow these ideas and you should be good to go.