A dress code which calls for ‘evening wear’ is sure to be a formal occasion where guests are expected to go that extra mile in terms of their dress and overall presentation. … Evening wear generally entails white or black tie and suits for men, and formal dresses, cocktail dresses or gowns for women.

An evening gown, evening dress or gown is a long flowing dress usually worn at formal occasions. The drop ranges from ballerina, tea, to full-length. Such gowns are typically worn with a evening gloves. Evening gowns are usually made of luxurious fabrics such as chiffon, velvet, satin, organza, etc.