The silhouette of this evening dress is supported by a boned inner bodice and boned inner petticoat, which is then covered with multiple layers of net petticoats and ruffles. The layer of net is concentrated on the sides and back of the skirt, which creates the 18th century pannier-like silhouette.

Although this dress appears to follow the same silhouette of the dress featured on the model in the link below, it shows signs of alterations in the torso, center back waistline and hem.

A color image of this design being worn by a model can be found here:  shorturl.at/rLUX5 

Pink silk shantung and cream silk taffeta strapless evening dress with drape pleated bodice that gathers into four drapes at the back, a lime green sewn in belt waist, and full gathered and pleated skirt with uneven hemline and supported with numerous layers of net and hem braid, and center back zipper closure.
Label: Pierre Balmain / Paris
Size Label: N/A
Style/Serial No.: 101288

Approximate Measurements:
Chest: 36"
Waist: 27"
Hips: 40"
Length (side seam to hem): 52"