Sarah Jessica Parker was back promoting her fashion empire Sunday afternoon at the ENK Fashion Coterie trade show at Pier 94. Parker’s the chief creative officer of Halston and has been a figurehead for the vintage label for a year. She met with buyers and boutique owners, and modeled looks from the Halston Heritage line to help get it snapped up by retailers. But she missed Halston’s presentation during Fashion Week because she was filming “I Don’t Know How She Does It” with Pierce Brosnan.