When you buy through our links, Business Insider may earn an affiliate commission. Learn moreRalph Lauren/Business InsiderOne of the finest all-American brands on the market is gearing up to offer stellar, stylish savings this season. Ralph Lauren's crisp button-down shirting, classic blazers, preppy polos, and polished chinos — among other categories — are on sale now for as much as 40% off via the Ralph Lauren Black Friday Sale.