From Styleist:
Celebrities turned out to christen day one of the new Mercedes-Benz Fashion Week at Lincoln Center, which proved a hit with the hundreds of fashion professionals who had grown used to much tighter quarters over the past 17 years in Bryant Park.

"Project Runway" host Heidi Klum and her band of insiders (Michael Kors, Nina Garcia, Tim Gunn, and celebrity guest judge, Jessica Simpson) started the day off with the "Project Runway" show, where celebs in attendance included Jamie-Lynn Sigler, designer Betsey Johnson, Jordin Sparks, model Tyson Beckford, and producer Harvey Weinstein.

A few hours later, Christian Siriano -- perhaps the reality program's most successful alumnus -- sent his own Spring/Summer 2011 collection down the catwalk. Other prominent collections showing on the busy first day included wunderkind Richard Chai's womenswear collection and Ruffian. (more)