This mother's dress is the Strapless with Shoulder Shaw style by Caterina by Jordan in Shades of Ivory, Shades of Gold/Yellow. It has a Off Shoulder, Straight neckline, a Mid Back back, and is Floor Length.
It was worn just once by a mother of the bride for a beach wedding and purchased for her as a gift from her friends. This mother of the bride has since passed away from cancer, so would surely love to have known this dress' second wear would be just as special as when she wore it.