The history of Double-Breasted Suit can be traced back to the 19th century. It originated in Europe and was deeply influenced by military attire. Here is its origin and evolution process: 

1.Origin: Military Uniforms and Nautical Uniforms
The double-breasted design originated in military uniforms and nautical uniforms from the 18th to the 19th century. The "Reefer Jacket" of the British Royal Navy was a short double-breasted coat designed for maritime navigation, to keep warm and provide comfort for movement. This coat later influenced the design of suits.

2. 19th Century: The Influence of European Nobility
In the 19th century, European nobility began to imitate the dress style of naval officers and introduced the double-breasted design into their daily attire, especially on the coats worn in formal occasions. The double-breasted design not only appeared solemn and symmetrical but also provided additional warmth retention function.

3. The Rise of the Gentlemanly Fashion in the Early 20th Century
By the early 20th century, especially during the 1920s and 1930s, double-breasted suits became the popular style for men in the upper classes of Europe and the United States, exuding authority and elegance. Hollywood movie stars and prominent figures in politics and business (such as Winston Churchill and Hollywood actor Clark Gable) all wore double-breasted suits, making it the mainstream men's fashion style of the time. 

4. From the Post-War Period to the End of the 20th Century: Fluctuating Trends
Post-War Period (1940s-1950s): Due to the shortage of fabric and the rise of the minimalist style, double-breasted suits once lost their popularity. 

In the 1980s and 1990s, double-breasted suits made a comeback in Italy and the United States, especially as redefined by brands such as Armani, which emphasized wide shoulders and tailored cuts.

5. The 21st Century: A Revival of Retro Fashion
In recent years, double-breasted suits have regained popularity in the fashion industry, especially driven by the trends of retro and bespoke suits. Modern double-breasted suits are more fitted and have simpler designs, and they are no longer limited to formal occasions but have become a fashionable choice.