Shop Men's at RalphLauren.com, the Official Site of Ralph Lauren. Classic-Fit Regent Dress Shirt - This relaxed-fitting dress shirt is crafted from smooth cotton poplin and features a smart gingham pattern and our stately Regent collar. Medium-spread Regent collar. Applied buttoned placket. Long sleeves with buttoned barrel cuffs. Split pleated back yoke ensures smooth, contoured shoulders. 100% cotton. Machine washable. Imported.