guards are only authorized leggings and white pistol belt. Dinner dress The dinner dress uniforms of the United States Navy are the most formal and have the most variations. For officers, there are Dinner Dress Blue and Dinner Dress White, Dinner Dress Blue Jacket and Dinner Dress White Jacket, and Formal Dress. Although trousers are authorized, women frequently wear the appropriate color skirt. Dinner Dress Blue and White are identical to their Service Dress versions, but worn with miniature medals and badges with no ribbons. Dinner Dress Blue is additionally worn with a dress shirt and black bow tie. These variants are commonly worn by many junior officers and enlisted personnel as substitutes for the more formal Dinner Dress Jacket variant which is only prescribable for Lieutenant Commander and above and optional for Lieutenant and below. The Dinner Dress Blue/White Jacket uniforms feature a short mess jacket with three buttons on either side, worn open with a black bow tie and gold cummerbund (women substitute a neck tab for the bow tie). Male officers show rank stripes on the sleeves of the jacket for the blue version and on shoulder boards for the white version, while women officers only wear sleeve stripes. This uniform is equivalent to black tie in usage. The Formal Dress variation is the most formal, and is identical to the Dinner Dress Blue Jacket uniform but worn with a white waistcoat with gold buttons in place of the cummerbund, a white bow tie, and matching mother-of-pearl studs and cuff links. Though rarely used, men can also substitute a tailcoat for the standard dinner dress jacket with this uniform. The female version is substantially the same as Dinner Dress Blue Jacket, but substitutes the mother-of-pearl studs and cuff links for gold. This uniform is equivalent to white tie in usage. Additionally, this uniform is only prescribed for chiefs and officers. Headgear is not required for dinner dress uniforms unless an outer jacket is worn. Those holding the rank of lieutenant and below have the option of using the Dinner Dress uniform when Dinner Dress Jacket is prescribed. The enlisted sailors who are chief petty officer and above wear a uniform similar to the officers, but with rank insignia and service stripes on the left sleeve. While enlisted who are petty officer first class and below have optional Dinner Dress Jacket uniforms similar to the officers and chiefs,