Here is the size of China from Asia, please pay attention to check your size, due to the different sizes of the area will be different, all suggest that you choose a size larger than usual size.
US Medium=China Large:Length:24.80"(63cm), Bust:44.88"(114cm), Shoulder:17.72"(45cm),Sleeve length:24.80"(63cm)
US Large=China X-Large:Length:25.59"(65cm), Bust:46.46"(118cm), Shoulder:18.50"(47cm),Sleeve length:25.59"(65cm)
US XLarge=China XX-Large:Length:26.38"(67cm), Bust:48.03"(122cm), Shoulder:18.90"(48cm),Sleeve length:25.98"(66cm)
US 2XLarge=China 3X-Large:Length:27.17"(69cm), Bust:49.61"(126cm), Shoulder:19.29"(49cm), Sleeve length:26.77"(68cm)
BYBU Mens Lapel Denim 2 Buttons Jacket Suit Blazer Jacket - SBRL9QUKU