Check out the pattern books...McCall's. Simplicity, Butterick, Vogue....Hancock's and Joann's runs these on sale once a month....Look in the costume sections of each book...they may also have the ladies western cut shirts in the shirts/blouses/tops sections. You can also pull all these pattern books up on line and check them out ahead of time...in your jammies....LOL I know youre not looking for a "costume" as such, but the cut/style of the pattern. That's why i mentioned the "costume " sections of the pattern books....It's all in how you make it as to whether or not it's a costume or a fashion.