In the 1960's, Hong Kong's industries developed rapidly, especially the textiles industry.  Influenced by American films as well as the completely westernized appearances of local movie stars like Chan Po-chu and Siu Fong-fong etc., great changes were brought to Hong Kong's fashion.  Women's suits gradually took the place of cheungsams and other Chinese style garments, which were no longer considered trendy and stylish.  As for men, western-styled suits reached its prime and the most stylish jackets at that time had smaller collars and lower splits.

Western clothes of the 1960s.

The westernized appearance of movie star Chan Po-chu directly affected the lady's fashion at that time.

A suit of the 1960s: small lapel, low vent.