and the letters "USN". The female junior enlisted sailors' Service Dress Blue uniform was formerly similar to the short-lived male uniform from the 1970s. This uniform was phased out and was replaced by a female-cut variant of the "crackerjacks" with the transition begun in October 2016 and completed by the end of January 2020 (delayed from its initial date of December 2019). Until 2016, the junior enlisted Service Dress White uniform, for both sexes, consisted of a white jumper with plain collar, white bell-bottom trousers with a fly front (or optional skirt for women), black leather shoes, the black neckerchief worn in the same fashion as with the Service Dress Blue uniform. Males wore the white "Dixie cup" cap, while females wore the same cap as their Service Dress Blue uniforms. That Service Dress White jumper was actually derived from the former Undress White, with its wide cuff-less sleeves and no piping. However, beginning in October 2015, Service Dress White jumpers were changed to feature navy blue piping on cuffed sleeves, stars and navy blue piping on the collar, and a yoke, making it a 'photo-negative' of the Service Dress Blue jumper. Ribbons are worn with these uniforms over the top left pocket opening, along with qualification or warfare insignia. Either the all-weather coat or peacoat may be worn with this uniform in cold or inclement weather. The color of the enlisted rate insignia and service stripes for the Service Dress Blues is either red or gold based upon how many years the wearer has served (prior to 2019 it was contingent on disciplinary history); the colors on the Service Dress Whites are always black. Full dress Full Dress uniforms are worn for ceremonies such as changes of command, retirements, commissionings and decommissionings, funerals, weddings, or when otherwise appropriate. Full Dress is similar to Service Dress except that instead of ribbons, full-size medals are worn above the left breast pocket, with ribbons worn on the opposite side for decorations without corresponding medals. Swords or cutlasses are authorized for wear by officers and chief petty officers, and may be required for Lt. Commander and above. For the Ceremonial Guard in Washington, D.C., the junior enlisted Full Dress uniforms are further modified with the wearing of a white pistol belt, ascot, and dress aiguilette (the latter two are white for winter and navy blue for summer), and white canvas leggings. Other honor