Fri., July 14, 8:30 p.m., $10, Nexus, 137 N. Second St., 215-629-1103, www.nexusphiladelphia.org

Fashion design team and sisters Chi-Chi and Chi-Chi E (Chigozilu and Chidelu Enigwe) stand for sophistication, sass and class. Not exactly truth, justice and the American way, but Superman was never a paragon of fashion either.

Chi-Chi E, who designs the ready-to-wear Vintique label while Chi-Chi heads up the Odi couture gowns line, says they chose to hold their fashion show in a gallery because they wanted attendees to see fashion as high art.

And guess what else? There's a dress code. Yup, suggested attire is a little black dress. "It's not just like you can walk out of a mall," says Chi-Chi E. "You have to think about your outfit to come to our show."