Rule no. 1: Don’t hesitate to invest in white— after all, you have a whole 24 weeks before Labor Day. Chloé tunic, $1,095, and pants, $498, at Chloé. Hermès shoes, $1,250 at Hermès. David Yurman chain, $525 (worn as a bracelet), with citrine pendant, $1,595, at Saks Fifth Avenue and David Yurman.