You prefer to spend your days in an old pair of Umbros. Alas, sometimes societal norms call for grown-up clothes (or something other than athletic gear). So pull a fast one in a Sophia Reyes dress.The Parsons-schooled Chicagoan casually drapes jewel-toned silks and vintagey floral cottons into very comfortable, flattering silhouettes (in sizes XS-XL). Thanks to girly accents like flutter sleeves and strategic ruffles, you can look like a lady without any unpleasant cinching or restricting.Between the origami-inspired Teah and the sailor-style, cap-sleeve Petal (both are around $250), we can’t pick a favorite. They’re all made in the good ol’ USA, so you can bet they’ll last longer than your favorite sweats.Available at Mulberry & Me, 2019 West Division Street, at Damen Avenue (773-952-7551); Tangerine, 1719 North Damen Avenue, at Wabansia Avenue (773-772-0505); Tula, 3738 North Southport Avenue, between Grace Street and Waveland Avenue (773-549-2876); online at sophiareyes.com.Photo: Mark ReyesUp to 80% off ChaikenSF designer Julie Chaiken is famous for her expertly fitted slacks. Load up on those and more (sleek LBDs, cashmere cardis, swanky silk tops) while they’re up to 80 percent off on our sample sale site.