It has been fascinating to watch New York designers play with both delicate and heavy fabrics this week in their collections. It is a mix that showed up on the runway at Vera Wang, and again Wednesday night at Elie Tahari. In his show notes, the designer compares the dark romanticism of his collection to "the cinematic movement of an antique music box." I would compare it to the film "Black Swan" set to the music of Stevie Nicks. Models came down the runway in black leather and lace, with chiffon capes billowing behind them. Before Tahari moved into more sturdy tweeds and cable knits, his dark, witchy ensembles were romantic and dangerous. In the second half of the show, he lightened the mood, but continued mixing leather jackets with voluminous, full-length chiffon skirts. It would have been fascinating to see more of Tahari's dark side, but overall he presented some important essentials of fall 2011 trends: Length in dresses, leather, and lots of lace.