The term 'Oscar Night Attire' typically refers to the formal clothing worn by attendees of the Academy Awards ceremony. The crossword solution for this term is 'GOWN, ' which is a type of dress that is usually floor-length and often made of luxurious fabrics such as silk or satin. Gowns are often adorned with intricate details such as beading, lace, or embroidery. They are usually worn with accessories such as jewelry, gloves, and a clutch bag.