This might be the most flattering gown you've ever worn. The twisted waist and back cutout on the In A Mood maxi dress by Katie May show off an enviable accentuated waist. A plunging V-neckline and center front slit complete the look. This might be the most flattering gown you've ever worn. The twisted waist and back cutout on the In A Mood maxi dress by Katie May show off an enviable accentuated waist. A plunging V-neckline and center front slit complete the look. Known for its revolutionary open-back wedding gowns, Katie May has responded to brides' requests for unparalleled design innovation and experimentation. With a tasteful assortment of gowns in crepe fabrication and ruched silhouettes, Katie May also fashions bridesmaids and gala dresses.