When you buy through our links, Business Insider may earn an affiliate commission. Learn moreExecutive editor Sally Kaplan styles the the Spanx wide-leg flare pants.Sally Kaplan/InsiderWhat you wear to work — much like what you wear on an eight-hour flight — can make all the difference in your day. The best women's work clothes have a stacked résumé: professional, versatile, easy to care for, comfortable, and affordable.Shapewear brand Spanx is responsible for some of our favorite basics, including the best underwear for women and the best tights — we even reviewed Spanx's leggings and loved them.