Ann Demeulemeester Draped Black Skirt, Volume is adjusted through a series of buttons that can be closed at the waist band.

The view from the back is surely my favorite.

MBD

Ann Demeulemeester Black Wool Wrap Skirt. The volume is controlled by a series of buttons along the interior waistband. It is not an exceptionally easy skirt to wear correctly, but if done right, it looks sublime.