By StyleWatch
Updated September 18, 2009 03:00 PM

Jason Kempin/Getty

The clothing wasn’t the bright thing at Anna Sui’s circus-themed runway show Wednesday night — for Peaches Geldof, it was her hair, too. The Brit It-girl debuted newly darkened locks in a rather unusual shade: dark purple. “I change it once every two months,” Geldof told PEOPLE, “and I thought purple because I’d exhausted every other option so why not?” As for the next color on her hair palette, “I want to go blue,” says the socialite. Sitting front row at Sui’s show in Bryant Park, Geldof enjoyed a low key appearance, ignoring the frenzy surrounding Olivia Palermo shooting a scene for The City with ELLE Creative Director Joe Zee, and instead focusing on the clothes on the catwalk. And what makes Sui one of her favorites? “She’s forward-thinking, but at the same time her collections reference back to eras like the ’70s and ’60s [where] really iconic moments in fashion happened,” said Geldof. See all the stars at N.Y.C. Fashion Week by clicking here. — Shruti Dhalwala