J. Crew Linen Blend Denim Button Down Shirt Longline

J. Crew blue denim button down shirt. 50% cotton & 50% linen. Tunic length with straight hem. Approximate measurements are: 19" armpit to armpit and 29" shoulder to hem. In very good pre-owned condition. There is a light area near the front pocket (see last photo). It looks like its just a variation in the fabric, but wanted to point it out.