The Probert Encyclopaedia of Costume

BALL GOWN

A ball gown is an elaborate, formal, woman's evening dress, often a full-skirted gown reaching at least to the ankles. Ball gowns are typically made from expensive fabric, usually satin, silk or taffeta, cut off the shoulder with a decollete neckline, and trimmed with lace, pearls, sequins and embroidery.
Research Ball Gown