U.S. NAVY MALE OFFICER DINNER DRESS BLUE JACKET UNIFORM 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 Royal Blue Satin evening wear dresses with Side Split Wedtrend Women Royal Blue Prom Dress Mermaid Spaghetti Straps Satin Formal Evening Dress with Split Front WEDTREND Jane Summers Isabella Backless Short White Rehearsal Dinner and Wedding Dress 2 White with Blush Pink Ribbon , female , adult Dinner Date Maxi Dress Blue Peppermayo US