J. Crew Slim Stretch Perfect Shirt in Stewart Tartan. 98% cotton, 2% elastane. Style K3726. NWT. Per J.Crew: "Precisely placed bust and back princess darts for a slimming, waist-defining fit that's a bit more feminine than our boy shirt. Crafted from lightweight cotton with a hint of stretch for extra comfort, this shirt is as indispensable as it is incomparable.” Approximate measurements taken flat size 00: Pit to pit: 17” Length: 26.5” top of shoulder to hem