Fashion has long had a love affair with the 1970s, and with good reason. Who can argue—especially come the warmer weather—with the languid fabrics, loose silhouettes, and laid-back spirit that defined the decade? In their latest collections, designers like Derek Lam and Loewe’s Jonathan Anderson perfectly captured that feel-good attitude with their array of silk and ribbed-knit tops, patchwork suede pieces, and wide-leg pants—soft, slouchy styles that, whether high-waisted or hip-slung, appeared to glide with every step. So go ahead and give your skinnies a rest this season. It’s springtime, and the living is easy.