Joni Mitchell was on the speakers singing about “falling in love again,” but you didn’t need the Lady of the Canyon to tell you we were going back to the 1970s at Derek Lam. His preoccupation with the decade is well known. Still, the nostalgia factor ticked up a few notches this season—there’s something about patchwork suede with contrast topstitching that just takes you back. But if Lam’s references felt quite literal this time around, that didn’t make the clothes any less compelling. For one thing, the ’70s are having a moment. For another, it’s great to see a designer embracing his passions with such gusto.