Ladies' evening gloves are long gloves worn by women as formal wear, usually to a formal outfit such as an evening gown or wedding dress. Among them, the longest evening gloves are called "opera gloves". The "elbow-length or longer" part is the key; gloves which cover a substantial portion of the forearm, up to just below the elbow, can legitimately be called "long gloves" or "evening gloves", but never "Opera Gloves".
