A solid-colored sheath is brilliant in more ways than one: It's versatile, stands out without screaming, and complements every body type. This silk cotton boatneck version has slenderizing off-center gathers and an exposed back zipper. Balance the brightness with neutral accessories, like sinuous silver earrings, a horn cuff, a black-and-white clutch, and two-tone wedges.
Sheath dress, Callula Lillibelle, $355. Earrings, Sikara & Co. Cuff, Monique Péan. Clutch, Khirma Eliazov. Wedges, Pierre Hardy.