There should have been a metal detector on fall runways, judging from the steely gleam in designers' eyes. You can play the trend tough or work it less aggressively (silver nail polish might be enough). This shimmering lamé jersey dress, with lavishly jeweled borders (Sue Wong, $374) and shaggy silver-threaded coat (Diane von Furstenberg, $895) are fancier than Work Out star Jackie Warner is accustomed to: Both in the gym (building on the success of Work Out, she's now developing a new fitness show for Bravo) and on the street, her taste is on the edgy side. Jackie's supertoned legs are perfect for short skirts, and she's certainly into black ("I say I'll buy color, but I never do"). The blackened sterling silver ring (Stephen Webster) is right in sync with her style: "I always add something punk or rock 'n' roll," she says.
Shoes, Jimmy Choo.