This is a Jil Sander shirt. The tag has been cut off as shown in the fifth photo because the material felt uncomfortable, but it is definitely authentic as it was purchased at a Jil Sander store. The retail price was over 100,000 yen. Approximate measurements are... Length: 69cm Shoulder width: 40cm Width: 45cm Sleeve length: 28cm Sleeve width: 17.5cm I've only worn it once or twice, so it's in very good condition. Please feel free to inquire about the price.