Alex Evenings Womens 12P Gray Sequined Maxi Evening Dress Gown Mother Prom. This dress would be perfect for a Mother of the Bride or Groom dress, prom, gala event or many other occasions. It is a beautiful gray with a sequined top and 3/4 sleeves. It has a deep front slit that measures 21 1/2". The length is 56 1/2" from the shoulder seam and 42" from the waist. The waist in ruched in on one side for a flattering silhouette. Dress is in excellent pre-owned condition. See photos for detail and measurements.