The Edwardian era is usually associated with the reign of King Edward VII, 1901-1910, in Great Britain. In fashion this era was much more casual oriented that the previous Victorian era. clothes were tailored much less constricting and had a more 'sporty' look and cut.
The so-called Edwardian Suit jacket was much shorter than the jackets worn in the Victorian era. In addition the jacket was much higher buttoned - usually 4, 5 or even 6 buttons at the front, and worn with narrow-cut trousers.