What does pre-fall mean to Derek Lam? “It’s not about inspiration, it’s about great pieces — really chic items that can be layered,” he said. And plenty of great items there were. For day, Lam included a glamorous ombré silver fox vest, cheerful bright-colored blouses, a cool caped coat and a trompe l’oeil dress in guncheck print. For evening, he kept it simple with sportswear-inspired frocks that, with a merino wool top and full skirted bottom, at first glance looked like separates. His reason? “We can’t seem to sell enough dresses,” he said.