Lightweight cottons are advised. For entertainment events, wear a jacket and tie or jacket and open-necked shirt. Jackets are usually not required. When meeting a government official, it is customary to dress more formally. White shirts, ties and pants.
Jackets are necessary in some expensive restaurants.
Suits and evening dresses are common in night spots. You should not wear shorts, and women should wear tops or blouses with sleeves or cover their shoulders. Shoes should be removed when visiting religious buildings. Most Singaporeans remove their shoes before entering a home. Each ethnic group in Singapore has a different gift-giving tradition.