Around the 1880s and increasingly through into the Edwardian era, an adaptation of the riding coat called a Newmarket coat, that rapidly and ever since became known as a morning coat, began to supplant the frock coat as daytime full dress. Once considered a casual equestrian sports coat, the morning coat slowly started to become both acceptable and increasingly popular, as a standard day-time town full dress alternative to the frock coat, a position which the morning coat enjoys to this day. The morning coat was particularly popular amongst fashionable younger men and the frock coat increasingly came to be worn mostly by older conservative gentlemen. The morning coat gradually relegated the frock coat only to more formal situations, to the point that the frock coat eventually came to be worn only as court and diplomatic dress. The lounge suit was once only worn as smart leisure wear in the country or at the seaside but in the middle of the 19th century started to rise rapidly in popularity. It took on the role of a more casual alternative to the morning coat for town wear, moving the latter up in the scale of formality. The more the morning coat became fashionable as correct daytime full dress, the more the lounge suit became acceptable as an informal alternative. Finally the frock coat became relegated to the status of ultra-formal day wear, worn only by older men. At the most formal events during the signing of the Treaty of Versailles in 1919, heads of government wore the frock coat but at more informal meetings they wore morning coats or even a lounge suit. In 1926, George V hastened the demise of the frock coat when he shocked the public by appearing at the opening of the Chelsea Flower Show wearing a morning coat. The frock coat barely survived the 1930s only as an ultra-formal form of court dress, until being finally officially abolished in 1936 as official court dress by Edward VIII (who later abdicated to become the Duke of Windsor). It was replaced by the morning coat, thus consigning the frock coat protocol-wise to the status of historic dress at the British royal court. Since that time it has been worn sparingly, albeit arguably not altogether vanished (see section on contemporary use further below). Composition Formal wear Frock coats worn with waistcoat and formal striped trousers are still very occasionally