Rachel Zoe, in a vintage Azzedine Alaia dress and Christian Louboutins, joined Tiffany's VP of Creative and Visual Merchandising, Richard Moore, for the unveiling of new windows at Tiffany & Co. in NYC today. Rachel collaborated with the company on a series of displays that salute five decades of fashion at Tiffany's. It's been a busy Fashion Week for Rachel, who has juggled her front-row obligations with her own designing duties. She showed her Rachel Zoe Collection on Saturday and also fit in appearances at Diane von Furstenberg, Skaist-Taylor, and Derek Lam's presentations over the weekend. Rachel shared her cold weather style tips, which she's been putting to use during her busy Big Apple visit, backstage at Derek Lam.