That doesn’t look like Hawaiian fabric!?!
It isn’t, it is a wonderful Japanese cotton crepe. They just had a large supply of Japanese prints. Sure, I can drive down to Momen+ in Torrance, but that is a drive. 
Crepe is a wonderful weave, the threads are over spun. Have you ever twisted yarn enough to create a rope? At some point, you get a nice flat rope, but if you continue to over twist – it gets all janky.
That is what they do to the threads that will be woven into crepe fabric. In this case, it was cotton, but the original crepe fabric was wool.
What this does is give the fabric just the tiniest amount of elasticity. Here they also mercerized the cotton, so it has a lovely sheen, not to mention the lovely delicate print.
Another button-down shirt, this happens to be the Granville Shirt from Sewaholic. I think she either sold or closed down her company. Pity, her patterns were as detailed as the big companies- which is rare to find in the indie pattern world. Most patterns there are geared towards the beginner sewer and are very simplified.
I have just retired a number of shirts I made 5-6 years ago. I like variety in my wardrobe but I am happy to get rid of the old and make way for the new, even if it is something I made. Right now I am in the midst of a sewing and purging spree, more to follow
Leah