Say hello to the short-sleeve button-up you asked for…but not just any short sleeve! We spent years developing a crisp, elegant split seam silhouette that comfortably hits your arm at its most flattering angle. Plus, a step hem that you can wear tucked or untucked, with every kind of pant for maximum versatility. RUN for Rosie. Shop at Frank & Eileen for Women's Short Sleeve Button Up Shirt, Rosie, Italian Classic Linen, Available in Size XL, Blue.