This is a custom-made shirt from Azabu Tailor. Purchased around 2016. Measurements (approximate): Width: 46cm Neck: 14cm Length: 64cm Sleeve Length: 56cm Armhole: 20cm I am 160cm tall, with a bust size of D75-E80. The shirt is tailored for a slim fit with a defined waist. There isn't much extra room around the shoulders. There is a hidden button between the third and fourth buttons.