Dress blues are the formal uniform worn by U.S. Marines for ceremonial occasions, official functions, and formal events, featuring distinctive dark blue coats, light blue trousers, white belts, and medals or ribbons Did you know? The Marine Corps' Dress Blues is the only uniform in the U.S. military designated to include the red, white, and blue colors of the American flag. This distinctive uniform Explore Photos Page 9 Search dress blue USMC MALE OFFICER BLUE DRESS BLUE WHITE DRESS UNIFORM ("A" AND "B") USMC Dress Blues for sale eBay