An evening gown or gown is the general name given to a lady`s dress worn to a formal affair starting after 6 o`clock p.m. It corresponds to men`s formal wear for white tie and black tie events. Gowns are worn by members of a wedding party, and by guests at formal evening weddings, for diplomatic events such as state dinners, and other formal events including debutante cotillions, proms, charity balls, art premiers and the opening of opera and ballet seasons, and many awards ceremonies. A gown is a long, often loose, flowing garment.

It is a type of dress, ranging in length from tea and ballerina to full-length. Gowns are often made of a luxury fabric such as chiffon, velvet, satin, or silk. Gowns are of various types ranging from ball gowns, dancing costumes, ball skirt, cocktail dress, wedding gown etc.