If you want a wrap dress done right (they are often cut poorly), Diane Von Furstonburg is the woman to see. Pricier, yes, but well worth the investment.
A wrap dress, especially one with a print, hides a number of figure imperfections -- I'd be tempted to say almost all as long as the wrap hits at the empire -- the combination of vneck, gathered fabric, cinched waist and print give you the most coverage without giving up one ounce of style.