Service Dress Blue (Yankee) uniform was for "warm weather afternoon and early evening functions such as yachting parties." The uniform was formally phased out in 2011 : r navy A Line V Neck Light Blue Long Prom Dresses, Light Blue Long Formal Evening Bridesmaid Dresses, US 10 Custom Color No Rush Mess dress uniform Wikipedia Halter Neck 2 Pieces High Low Backless Navy Blue Prom Dress, Navy Blue abcprom