Crew uniform colours of Singapore Airlines. L-R. Leading Steward (LS, green tie), In Flight Supervisor female (IFSS, purple Sarong Kebaya), Chief Stewardess (CSS, Red), Leading Stewardess (LSS, Green), Flight Stewardess (FSS, Blue). The picture also represents the three major ethnic groups of Singapore. Chinese, Indians, Malays. Photo courtesy Changi airport.