Britney was clearly the star at Kimora Lee Simmons' Baby Phat show, where the 25-year-old pop singer and mother of two sat in the front row in a foxy black cocktail dress.
The former Mrs. Kevin Federline, who's gone brunette again, then hit an after-party thrown for designer Rag & Bone, The New York Post reported.
In spite of the recent brouhaha over Spears' post-separation partying with Paris Hilton without underwear, no paparazzi caught her on-camera with her drawers down this time.
Conner, the fresh-out-of-rehab beauty queen, one-upped Spears and walked the runway at the Tadashi show in a black-and-gold gown.
Conner was ordered to go to rehab in order to keep her crown after cocaine use and binge drinking almost got her fired — and the 21-year-old spoke openly to reporters about the difficulty of overcoming addiction.
"If I were to say I never have cravings, I would be lying," she told The New York Daily News. "I'll be in situations where I would have initially had a drink, but I feel better and I take more pride in not doing it now."
Last week, Conner sat down with "Today" show host Matt Lauer and admitted that she'd done cocaine. She also implied she'd been the victim of child abuse.
Meanwhile, a new poll shows 77 percent of adults worry that rebellious young women in the spotlight like Spears, Hilton and actress Lindsay Lohan have too much of an influence on girls in this country.
The Newsweek survey found that Hollywood's young female stars and their wicked ways — whether it's drunk driving, drug use or baring almost all — are having a negative impact on girls in the U.S.
Eighty-four percent of respondents said that sexuality is more prominent in American pop culture than it was two or three decades ago, the poll found, but teen pregnancy, drug and alcohol use are still on a downswing.
Fashion Week, which showcases designers' fall 2007 collections, continues through Friday.