sword belt with three stripes. It is worn at parades such as Lord High Admiral's Divisions (BRNC) or at state occasions. Introduced in 1960, it is essentially the same Full Dress uniform worn for ceremonial occasions before that date only with the cocked hat replaced by the peaked hat and the epaulettes replaced by shoulder boards, and without the cuff slash and gold lace on the rear pockets. The ceremonial day coats worn by women button up the opposite way, and the tricorn hat is worn instead of the peaked cap (as worn by the Princess Royal). No. 1 dress This is the formal uniform worn on ceremonial occasions. For all commissioned officers it consists of a double-breasted, navy blue reefer jacket with four rows of two buttons, matching trousers, white shirt, black tie, peaked cap, black socks, and black leather shoes. It is divided into 1A (with medals and bearing arms), 1B (same as 1A, but without arms), and 1C (with medal ribbons). Female personnel may wear skirts except when carrying a sword or rifle. It was originally introduced in 1889 and was initially known as the 'undress coat'. No. 2 dress This mess dress is worn in the evenings for dining. 2A is the formal evening dress for ceremonial dinners; it consists of a navy blue mess jacket with a white waistcoat (black cummerbund for female officers) with miniature medals. For officers of the rank of captain and above, a navy blue tailcoat (known as an 'undress tailcoat') may optionally be worn in lieu of the mess jacket. For officers of these ranks; in addition, gold-laced trousers (known informally as 'lightning conductors') may also be optionally worn either with the tailcoat or the mess jacket. 2B is "mess undress" for other mess functions, and is worn with either a black cummerbund or navy blue waistcoat and miniature medals. 2C, "red sea rig", is worn for informal evening wear on board ship; it consists of a white short sleeved shirt, worn with shoulder boards, without medals and with black trousers, black shoes and a black cummerbund. No. 3 dress This is worn all year round for general duties. It consists of a white shirt with rank insignia on the shoulders, and appropriate headgear. For officers 3A dress includes a long-sleeved shirt and tie, while 3B includes a short-sleeved shirt but without the tie. 3C is the same in all